- Added solutions by Jan Krnavek.

- Added solutions by Arne Sommer.
- Added solutions by Bruce Gray.
- Added solutions by W. Luis Mochan.
- Added solutions by Laurent Rosenfeld.

18 files changed, 1691 insertions, 1601 deletions

diff --git a/challenge-257/laurent-rosenfeld/blog1.txt b/challenge-257/laurent-rosenfeld/blog1.txt
new file mode 100644
index 0000000000..904b9b2bd6
--- /dev/null
+++ b/challenge-257/laurent-rosenfeld/blog1.txt
@@ -0,0 +1 @@
+https://blogs.perl.org/users/laurent_r/2024/02/perl-weekly-challenge-257-reduced-row-echelon.html
diff --git a/challenge-257/laurent-rosenfeld/raku/ch-2.raku b/challenge-257/laurent-rosenfeld/raku/ch-2.raku
new file mode 100644
index 0000000000..ad179731e8
--- /dev/null
+++ b/challenge-257/laurent-rosenfeld/raku/ch-2.raku
@@ -0,0 +1,40 @@
+sub is-first-echelon (@mat) {
+    my @leading;
+    for 0..@mat.end -> $i {
+        my @row = |@mat[$i];
+        for 0..@row.end -> $j {
+            next if @row[$j] == 0;
+            if @row[$j] == 1 {
+                @leading[$i] = $j;
+                last;
+            } else {
+            }
+        }
+        @leading[$i] = Inf unless defined @leading[$i];
+    }
+    return False unless [<] grep { $_ < Inf }, @leading; # rules 2 and 3
+    return False unless [<=] @leading;
+    for 0..@leading.end -> $i {
+        last if @leading[$i] == Inf;
+        next unless defined @leading[$i];
+        for 0..@mat.end -> $k {
+            next if $i == @leading[$k];
+            return False if @mat[$k][$i] != 0;
+        }
+    }
+    return True;
+}
+
+my @tests =
+    [ [1,0,0,1], [0,1,0,2], [0,0,1,3]],
+    [ [1, 1, 0], [0, 1, 0], [0, 0, 0]],
+    [ [0, 1,-2, 0, 1], [0, 0, 0, 1, 3], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]],
+    [ [1, 0, 0, 4], [0, 1, 0, 7], [0, 0, 1,-1]],
+    [ [0, 1,-2, 0, 1], [0, 0, 0, 0, 0], [0, 0, 0, 1, 3], [0, 0, 0, 0, 0]],
+    [ [0, 1, 0], [1, 0, 0], [0, 0, 0]],
+    [ [4, 0, 0, 0], [0, 1, 0, 7], [0, 0, 1,-1]];
+
+for @tests -> @test {
+    printf "%-20s => ", "@test[0] ...";
+    say is-first-echelon @test;
+}
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index b92382b9eb..8b21bb2184 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,142 +1,51 @@
 {
-   "series" : [
-      {
-         "colorByPoint" : 1,
-         "data" : [
-            {
-               "name" : "Athanasius",
-               "y" : 4,
-               "drilldown" : "Athanasius"
-            },
-            {
-               "drilldown" : "Bob Lied",
-               "y" : 2,
-               "name" : "Bob Lied"
-            },
-            {
-               "name" : "Dave Jacoby",
-               "drilldown" : "Dave Jacoby",
-               "y" : 3
-            },
-            {
-               "drilldown" : "David Ferrone",
-               "y" : 2,
-               "name" : "David Ferrone"
-            },
-            {
-               "drilldown" : "E. Choroba",
-               "y" : 2,
-               "name" : "E. Choroba"
-            },
-            {
-               "name" : "Jorg Sommrey",
-               "y" : 3,
-               "drilldown" : "Jorg Sommrey"
-            },
-            {
-               "name" : "Laurent Rosenfeld",
-               "y" : 3,
-               "drilldown" : "Laurent Rosenfeld"
-            },
-            {
-               "y" : 4,
-               "drilldown" : "Lubos Kolouch",
-               "name" : "Lubos Kolouch"
-            },
-            {
-               "drilldown" : "Luca Ferrari",
-               "y" : 11,
-               "name" : "Luca Ferrari"
-            },
-            {
-               "drilldown" : "Mariano Spadaccini",
-               "y" : 1,
-               "name" : "Mariano Spadaccini"
-            },
-            {
-               "name" : "Mark Anderson",
-               "drilldown" : "Mark Anderson",
-               "y" : 2
-            },
-            {
-               "name" : "Matthew Neleigh",
-               "drilldown" : "Matthew Neleigh",
-               "y" : 2
-            },
-            {
-               "name" : "Nelo Tovar",
-               "drilldown" : "Nelo Tovar",
-               "y" : 2
-            },
-            {
-               "drilldown" : "Peter Campbell Smith",
-               "y" : 3,
-               "name" : "Peter Campbell Smith"
-            },
-            {
-               "name" : "Peter Meszaros",
-               "y" : 2,
-               "drilldown" : "Peter Meszaros"
-            },
-            {
-               "drilldown" : "Robbie Hatley",
-               "y" : 1,
-               "name" : "Robbie Hatley"
-            },
-            {
-               "name" : "Roger Bell_West",
-               "y" : 5,
-               "drilldown" : "Roger Bell_West"
-            },
-            {
-               "name" : "Simon Green",
-               "y" : 3,
-               "drilldown" : "Simon Green"
-            },
-            {
-               "drilldown" : "Thomas Kohler",
-               "y" : 4,
-               "name" : "Thomas Kohler"
-            },
-            {
-               "name" : "Ulrich Rieke",
-               "drilldown" : "Ulrich Rieke",
-               "y" : 3
-            },
-            {
-               "name" : "W. Luis Mochan",
-               "drilldown" : "W. Luis Mochan",
-               "y" : 3
-            }
-         ],
-         "name" : "The Weekly Challenge - 257"
-      }
-   ],
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
+   "xAxis" : {
+      "type" : "category"
    },
-   "chart" : {
-      "type" : "column"
+   "tooltip" : {
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
+      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
+      "followPointer" : 1
    },
-   "title" : {
-      "text" : "The Weekly Challenge - 257"
+   "subtitle" : {
+      "text" : "[Champions: 24] Last updated at 2024-02-25 22:53:13 GMT"
    },
-   "xAxis" : {
-      "type" : "category"
+   "chart" : {
+      "type" : "column"
    },
    "legend" : {
       "enabled" : 0
    },
-   "tooltip" : {
-      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
-      "followPointer" : 1,
-      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>"
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "format" : "{point.y}",
+            "enabled" : 1
+         },
+         "borderWidth" : 0
+      }
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 257"
    },
    "drilldown" : {
       "series" : [
          {
+            "id" : "Arne Sommer",
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "name" : "Arne Sommer"
+         },
+         {
+            "id" : "Athanasius",
             "data" : [
                [
                   "Perl",
@@ -147,20 +56,30 @@
                   2
                ]
             ],
-            "name" : "Athanasius",
-            "id" : "Athanasius"
+            "name" : "Athanasius"
          },
          {
+            "name" : "Bob Lied",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Bob Lied",
-            "name" : "Bob Lied"
+            "id" : "Bob Lied"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "name" : "Bruce Gray",
+            "id" : "Bruce Gray"
          },
          {
+            "id" : "Dave Jacoby",
             "data" : [
                [
                   "Perl",
@@ -171,18 +90,17 @@
                   1
                ]
             ],
-            "name" : "Dave Jacoby",
-            "id" : "Dave Jacoby"
+            "name" : "Dave Jacoby"
          },
          {
+            "id" : "David Ferrone",
+            "name" : "David Ferrone",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "name" : "David Ferrone",
-            "id" : "David Ferrone"
+            ]
          },
          {
             "data" : [
@@ -195,6 +113,17 @@
             "id" : "E. Choroba"
          },
          {
+            "name" : "Jan Krnavek",
+            "data" : [
+               [
+                  "Raku",
+                  1
+               ]
+            ],
+            "id" : "Jan Krnavek"
+         },
+         {
+            "id" : "Jorg Sommrey",
             "data" : [
                [
                   "Perl",
@@ -205,10 +134,11 @@
                   1
                ]
             ],
-            "id" : "Jorg Sommrey",
             "name" : "Jorg Sommrey"
          },
          {
+            "id" : "Laurent Rosenfeld",
+            "name" : "Laurent Rosenfeld",
             "data" : [
                [
                   "Perl",
@@ -216,18 +146,17 @@
                ],
                [
                   "Raku",
-                  1
+                  2
                ],
                [
                   "Blog",
-                  1
+                  2
                ]
-            ],
-            "id" : "Laurent Rosenfeld",
-            "name" : "Laurent Rosenfeld"
+            ]
          },
          {
             "id" : "Lubos Kolouch",
+            "name" : "Lubos Kolouch",
             "data" : [
                [
                   "Perl",
@@ -237,10 +166,10 @@
                   "Raku",
                   2
                ]
-            ],
-            "name" : "Lubos Kolouch"
+            ]
          },
          {
+            "id" : "Luca Ferrari",
             "name" : "Luca Ferrari",
             "data" : [
                [
@@ -251,8 +180,7 @@
                   "Blog",
                   9
                ]
-            ],
-            "id" : "Luca Ferrari"
+            ]
          },
          {
             "data" : [
@@ -281,20 +209,21 @@
                   2
                ]
             ],
-            "id" : "Matthew Neleigh",
-            "name" : "Matthew Neleigh"
+            "name" : "Matthew Neleigh",
+            "id" : "Matthew Neleigh"
          },
          {
             "id" : "Nelo Tovar",
+            "name" : "Nelo Tovar",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "name" : "Nelo Tovar"
+            ]
          },
          {
+            "name" : "Peter Campbell Smith",
             "data" : [
                [
                   "Perl",
@@ -305,18 +234,17 @@
                   1
                ]
             ],
-            "id" : "Peter Campbell Smith",
-            "name" : "Peter Campbell Smith"
+            "id" : "Peter Campbell Smith"
          },
          {
+            "id" : "Peter Meszaros",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "name" : "Peter Meszaros",
-            "id" : "Peter Meszaros"
+            "name" : "Peter Meszaros"
          },
          {
             "id" : "Robbie Hatley",
@@ -347,7 +275,6 @@
             "id" : "Roger Bell_West"
          },
          {
-            "id" : "Simon Green",
             "data" : [
                [
                   "Perl",
@@ -358,9 +285,12 @@
                   1
                ]
             ],
-            "name" : "Simon Green"
+            "name" : "Simon Green",
+            "id" : "Simon Green"
          },
          {
+            "id" : "Thomas Kohler",
+            "name" : "Thomas Kohler",
             "data" : [
                [
                   "Perl",
@@ -370,9 +300,7 @@
                   "Blog",
                   2
                ]
-            ],
-            "name" : "Thomas Kohler",
-            "id" : "Thomas Kohler"
+            ]
          },
          {
             "data" : [
@@ -385,10 +313,12 @@
                   1
                ]
             ],
-            "id" : "Ulrich Rieke",
-            "name" : "Ulrich Rieke"
+            "name" : "Ulrich Rieke",
+            "id" : "Ulrich Rieke"
          },
          {
+            "id" : "W. Luis Mochan",
+            "name" : "W. Luis Mochan",
             "data" : [
                [
                   "Perl",
@@ -398,22 +328,141 @@
                   "Blog",
                   1
                ]
-            ],
-            "name" : "W. Luis Mochan",
-            "id" : "W. Luis Mochan"
+            ]
          }
       ]
    },
-   "plotOptions" : {
-      "series" : {
-         "dataLabels" : {
-            "enabled" : 1,
-            "format" : "{point.y}"
-         },
-         "borderWidth" : 0
+   "series" : [
+      {
+         "name" : "The Weekly Challenge - 257",
+         "colorByPoint" : 1,
+         "data" : [
+            {
+               "drilldown" : "Arne Sommer",
+               "y" : 3,
+               "name" : "Arne Sommer"
+            },
+            {
+               "drilldown" : "Athanasius",
+               "y" : 4,
+               "name" : "Athanasius"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Bob Lied",
+               "name" : "Bob Lied"
+            },
+            {
+               "drilldown" : "Bruce Gray",
+               "y" : 2,
+               "name" : "Bruce Gray"
+            },
+            {
+               "name" : "Dave Jacoby",
+               "drilldown" : "Dave Jacoby",
+               "y" : 3
+            },
+            {
+               "y" : 2,
+               "drilldown" : "David Ferrone",
+               "name" : "David Ferrone"
+            },
+            {
+               "name" : "E. Choroba",
+               "y" : 2,
+               "drilldown" : "E. Choroba"
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Jan Krnavek",
+               "name" : "Jan Krnavek"
+            },
+            {
+               "name" : "Jorg Sommrey",
+               "drilldown" : "Jorg Sommrey",
+               "y" : 3
+            },
+            {
+               "name" : "Laurent Rosenfeld",
+               "drilldown" : "Laurent Rosenfeld",
+               "y" : 5
+            },
+            {
+               "drilldown" : "Lubos Kolouch",
+               "y" : 4,
+               "name" : "Lubos Kolouch"
+            },
+            {
+               "name" : "Luca Ferrari",
+               "y" : 11,
+               "drilldown" : "Luca Ferrari"
+            },
+            {
+               "name" : "Mariano Spadaccini",
+               "y" : 1,
+               "drilldown" : "Mariano Spadaccini"
+            },
+            {
+               "name" : "Mark Anderson",
+               "y" : 2,
+               "drilldown" : "Mark Anderson"
+            },
+            {
+               "drilldown" : "Matthew Neleigh",
+               "y" : 2,
+               "name" : "Matthew Neleigh"
+            },
+            {
+               "name" : "Nelo Tovar",
+               "drilldown" : "Nelo Tovar",
+               "y" : 2
+            },
+            {
+               "name" : "Peter Campbell Smith",
+               "drilldown" : "Peter Campbell Smith",
+               "y" : 3
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Peter Meszaros",
+               "name" : "Peter Meszaros"
+            },
+            {
+               "drilldown" : "Robbie Hatley",
+               "y" : 1,
+               "name" : "Robbie Hatley"
+            },
+            {
+               "name" : "Roger Bell_West",
+               "y" : 5,
+               "drilldown" : "Roger Bell_West"
+            },
+            {
+               "y" : 3,
+               "drilldown" : "Simon Green",
+               "name" : "Simon Green"
+            },
+            {
+               "drilldown" : "Thomas Kohler",
+               "y" : 4,
+               "name" : "Thomas Kohler"
+            },
+            {
+               "drilldown" : "Ulrich Rieke",
+               "y" : 3,
+               "name" : "Ulrich Rieke"
+            },
+            {
+               "y" : 3,
+               "drilldown" : "W. Luis Mochan",
+               "name" : "W. Luis Mochan"
+            }
+         ]
+      }
+   ],
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
       }
-   },
-   "subtitle" : {
-      "text" : "[Champions: 21] Last updated at 2024-02-25 15:07:11 GMT"
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index 7634a2592a..48e14f13a0 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,53 +1,44 @@
 {
-   "subtitle" : {
-      "text" : "Last updated at 2024-02-25 15:07:10 GMT"
-   },
    "tooltip" : {
       "pointFormat" : "<b>{point.y:.0f}</b>"
    },
-   "legend" : {
-      "enabled" : "false"
-   },
    "xAxis" : {
-      "type" : "category",
       "labels" : {
          "style" : {
-            "fontSize" : "13px",
-            "fontFamily" : "Verdana, sans-serif"
+            "fontFamily" : "Verdana, sans-serif",
+            "fontSize" : "13px"
          }
-      }
-   },
-   "title" : {
-      "text" : "The Weekly Challenge Contributions [2019 - 2024]"
+      },
+      "type" : "category"
    },
    "chart" : {
       "type" : "column"
    },
-   "yAxis" : {
-      "title" : {
-         "text" : null
-      },
-      "min" : 0
+   "subtitle" : {
+      "text" : "Last updated at 2024-02-25 22:53:13 GMT"
+   },
+   "legend" : {
+      "enabled" : "false"
    },
    "series" : [
       {
+         "name" : "Contributions",
          "dataLabels" : {
             "enabled" : "true",
-            "rotation" : -90,
-            "y" : 10,
+            "align" : "right",
             "style" : {
-               "fontSize" : "13px",
-               "fontFamily" : "Verdana, sans-serif"
+               "fontFamily" : "Verdana, sans-serif",
+               "fontSize" : "13px"
             },
-            "align" : "right",
-            "format" : "{point.y:.0f}",
-            "color" : "#FFFFFF"
+            "y" : 10,
+            "rotation" : -90,
+            "color" : "#FFFFFF",
+            "format" : "{point.y:.0f}"
          },
-         "name" : "Contributions",
          "data" : [
             [
                "Blog",
-               4553
+               4555
             ],
             [
                "Perl",
@@ -55,9 +46,18 @@
             ],
             [
                "Raku",
-               7658
+               7664
             ]
          ]
       }
-   ]
+   ],
+   "yAxis" : {
+      "min" : 0,
+      "title" : {
+         "text" : null
+      }
+   },
+   "title" : {
+      "text" : "The Weekly Challenge Contributions [2019 - 2024]"
+   }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index 0c55990309..1e35d022b4 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,28 +1,29 @@
 {
-   "tooltip" : {
-      "followPointer" : "true",
-      "headerFormat" : "<span style=\"font-size:11px\"></span>",
-      "pointFormat" : "<span style=\"color:{point.color}\">Challenge {point.name}</span>: <b>{point.y:f}</b><br/>"
-   },
    "legend" : {
       "enabled" : "false"
    },
-   "plotOptions" : {
-      "series" : {
-         "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
-         },
-         "borderWidth" : 0
-      }
+   "chart" : {
+      "type" : "column"
    },
    "subtitle" : {
-      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2024-02-25 15:07:11 GMT"
+      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2024-02-25 22:53:13 GMT"
+   },
+   "tooltip" : {
+      "pointFormat" : "<span style=\"color:{point.color}\">Challenge {point.name}</span>: <b>{point.y:f}</b><br/>",
+      "headerFormat" : "<span style=\"font-size:11px\"></span>",
+      "followPointer" : "true"
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
    },
    "drilldown" : {
       "series" : [
          {
-            "id" : "001",
             "data" : [
                [
                   "Perl",
@@ -37,9 +38,12 @@
                   12
                ]
             ],
-            "name" : "001"
+            "name" : "001",
+            "id" : "001"
          },
          {
+            "id" : "002",
+            "name" : "002",
             "data" : [
                [
                   "Perl",
@@ -53,12 +57,9 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "002",
-            "id" : "002"
+            ]
          },
          {
-            "id" : "003",
             "data" : [
                [
                   "Perl",
@@ -73,10 +74,10 @@
                   9
                ]
             ],
-            "name" : "003"
+            "name" : "003",
+            "id" : "003"
          },
          {
-            "id" : "004",
             "data" : [
                [
                   "Perl",
@@ -91,9 +92,12 @@
                   10
                ]
             ],
-            "name" : "004"
+            "name" : "004",
+            "id" : "004"
          },
          {
+            "id" : "005",
+            "name" : "005",
             "data" : [
                [
                   "Perl",
@@ -107,9 +111,7 @@
                   "Blog",
                   12
                ]
-            ],
-            "id" : "005",
-            "name" : "005"
+            ]
          },
          {
             "data" : [
@@ -148,6 +150,7 @@
             "name" : "007"
          },
          {
+            "name" : "008",
             "data" : [
                [
                   "Perl",
@@ -162,10 +165,10 @@
                   12
                ]
             ],
-            "id" : "008",
-            "name" : "008"
+            "id" : "008"
          },
          {
+            "id" : "009",
             "name" : "009",
             "data" : [
                [
@@ -180,8 +183,7 @@
                   "Blog",
                   13
                ]
-            ],
-            "id" : "009"
+            ]
          },
          {
             "id" : "010",
@@ -202,7 +204,7 @@
             "name" : "010"
          },
          {
-            "name" : "011",
+            "id" : "011",
             "data" : [
                [
                   "Perl",
@@ -217,7 +219,7 @@
                   10
                ]
             ],
-            "id" : "011"
+            "name" : "011"
          },
          {
             "name" : "012",
@@ -239,6 +241,7 @@
          },
          {
             "id" : "013",
+            "name" : "013",
             "data" : [
                [
                   "Perl",
@@ -252,11 +255,9 @@
                   "Blog",
                   13
                ]
-            ],
-            "name" : "013"
+            ]
          },
          {
-            "name" : "014",
             "data" : [
                [
                   "Perl",
@@ -271,6 +272,7 @@
                   15
                ]
             ],
+            "name" : "014",
             "id" : "014"
          },
          {
@@ -292,6 +294,7 @@
             "id" : "015"
          },
          {
+            "name" : "016",
             "data" : [
                [
                   "Perl",
@@ -306,11 +309,11 @@
                   13
                ]
             ],
-            "id" : "016",
-            "name" : "016"
+            "id" : "016"
          },
          {
             "id" : "017",
+            "name" : "017",
             "data" : [
                [
                   "Perl",
@@ -324,10 +327,11 @@
                   "Blog",
                   12
                ]
-            ],
-            "name" : "017"
+            ]
          },
          {
+            "id" : "018",
+            "name" : "018",
             "data" : [
                [
                   "Perl",
@@ -341,12 +345,9 @@
                   "Blog",
                   14
                ]
-            ],
-            "id" : "018",
-            "name" : "018"
+            ]
          },
          {
-            "name" : "019",
             "data" : [
                [
                   "Perl",
@@ -361,10 +362,10 @@
                   13
                ]
             ],
+            "name" : "019",
             "id" : "019"
          },
          {
-            "id" : "020",
             "data" : [
                [
                   "Perl",
@@ -379,10 +380,10 @@
                   13
                ]
             ],
-            "name" : "020"
+            "name" : "020",
+            "id" : "020"
          },
          {
-            "id" : "021",
             "data" : [
                [
                   "Perl",
@@ -397,10 +398,11 @@
                   10
                ]
             ],
-            "name" : "021"
+            "name" : "021",
+            "id" : "021"
          },
          {
-            "name" : "022",
+            "id" : "022",
             "data" : [
                [
                   "Perl",
@@ -415,7 +417,7 @@
                   10
                ]
             ],
-            "id" : "022"
+            "name" : "022"
          },
          {
             "name" : "023",
@@ -436,6 +438,7 @@
             "id" : "023"
          },
          {
+            "id" : "024",
             "data" : [
                [
                   "Perl",
@@ -450,11 +453,10 @@
                   11
                ]
             ],
-            "name" : "024",
-            "id" : "024"
+            "name" : "024"
          },
          {
-            "name" : "025",
+            "id" : "025",
             "data" : [
                [
                   "Perl",
@@ -469,9 +471,10 @@
                   12
                ]
             ],
-            "id" : "025"
+            "name" : "025"
          },
          {
+            "id" : "026",
             "data" : [
                [
                   "Perl",
@@ -486,7 +489,6 @@
                   10
                ]
             ],
-            "id" : "026",
             "name" : "026"
          },
          {
@@ -504,11 +506,10 @@
                   9
                ]
             ],
-            "id" : "027",
-            "name" : "027"
+            "name" : "027",