- Added solutions by Ulrich Rieke.

18 files changed, 1418 insertions, 1256 deletions

diff --git a/challenge-147/ulrich-rieke/cpp/ch-1.cpp b/challenge-147/ulrich-rieke/cpp/ch-1.cpp
new file mode 100644
index 0000000000..975ba98215
--- /dev/null
+++ b/challenge-147/ulrich-rieke/cpp/ch-1.cpp
@@ -0,0 +1,46 @@
+#include <iostream>
+#include <string>
+#include <cmath>
+#include <vector>
+
+bool isPrime( int n ) {
+  if ( n == 1 )
+      return false ;
+  if ( n == 2 )
+      return true ;
+  int root = static_cast<int>( floor( sqrt( static_cast<double>( n ) ))) ;
+  for ( int i = 2 ; i < root + 1 ; i++ )
+      if ( n % i == 0 )
+    return false ;
+  return true ;
+}
+
+bool isLeftTruncatablePrime( int n ) {
+  if ( ! isPrime( n ) )
+      return false ;
+  std::string numberstring( std::to_string( n ) ) ;
+  auto found = numberstring.find( '0' ) ;
+  if ( found != std::string::npos )
+      return false ;
+  int len = static_cast<int>(numberstring.length( ) ) ;
+  for ( int i = 0 ; i < len ; i++ ) {
+      int num = std::stoi( numberstring.substr( i ) ) ;
+      if ( ! isPrime( num ) )
+    return false ;
+  }
+  return true ;
+}
+
+int main( ) {
+  std::vector<int> leftTruncatables ;
+  int current = 0 ;
+  while ( leftTruncatables.size( ) < 20 ) {
+      current++ ;
+      if ( isLeftTruncatablePrime( current ) )
+    leftTruncatables.push_back( current ) ;
+  }
+  for ( int i : leftTruncatables )
+      std::cout << i << ' ' ;
+  std::cout << std::endl ;
+  return 0 ;
+}
diff --git a/challenge-147/ulrich-rieke/haskell/ch-1.hs b/challenge-147/ulrich-rieke/haskell/ch-1.hs
new file mode 100644
index 0000000000..6c3dec240b
--- /dev/null
+++ b/challenge-147/ulrich-rieke/haskell/ch-1.hs
@@ -0,0 +1,24 @@
+module Challenge147
+  where
+
+isPrime :: Int -> Bool
+isPrime n
+  |n == 1 = False
+  |n == 2 = True
+  |otherwise = null $ filter (\i -> mod n i == 0 ) [2 .. root]
+  where
+      root :: Int
+      root = round $ sqrt $ fromIntegral n
+
+isTruncatablePrime :: Int -> Bool
+isTruncatablePrime n = (not $ elem '0' nstring) && all isPrime theList
+  where
+      l :: Int
+      l = length nstring
+      nstring :: String
+      nstring = show n
+      theList :: [Int]
+      theList = map (\i -> read $ drop i nstring) [0 .. l - 1]
+
+solution :: [Int]
+solution = take 20 $ filter isTruncatablePrime [1 , 2 ..]
diff --git a/challenge-147/ulrich-rieke/perl/ch-2.pl b/challenge-147/ulrich-rieke/perl/ch-2.pl
new file mode 100644
index 0000000000..3267c431cf
--- /dev/null
+++ b/challenge-147/ulrich-rieke/perl/ch-2.pl
@@ -0,0 +1,42 @@
+#!/usr/bin/perl ;
+use strict ;
+use warnings ;
+use Algorithm::Combinatorics qw ( combinations ) ;
+use POSIX ;
+use feature 'say' ;
+
+sub isPentagonNumber {
+  my $num = shift ;
+  my $root = ( sqrt( 24 * $num + 1 ) + 1 ) / 2 ;
+  return floor( $root ) == $root ;
+}
+
+sub toPentagon {
+  my $num = shift ;
+  return ( $num * ( 3 * $num  - 1 )) / 2 ;
+}
+
+my @pentagons = (1, 5, 12, 22, 35, 51, 70, 92, 117 , 145 ) ;
+my $current = 10 ;
+my $iter = combinations( \@pentagons, 2 ) ;
+while ( my $c = $iter->next ) {
+  if ( isPentagonNumber( $c->[ 0 ] + $c->[1] ) &&
+    isPentagonNumber( abs( $c->[0] - $c->[1] ) ) ) {
+      say "$c->[0] , $c->[1]" ;
+      exit( 0 ) ;
+  }
+}
+my $combiFound = 0 ;
+do {
+  $current++ ;
+  push @pentagons , toPentagon( $current ) ;
+  $iter = combinations( \@pentagons , 2 ) ;
+  while ( my $c = $iter->next ) {
+      if ( isPentagonNumber( $c->[ 0 ] + $c->[1] ) &&
+        isPentagonNumber( abs( $c->[0] - $c->[1] ) ) ) {
+    say "$c->[0] , $c->[1]" ;
+    $combiFound = 1 ;
+    last ;
+      }
+  }
+} while ( $combiFound == 0 ) ;
diff --git a/challenge-147/ulrich-rieke/raku/ch-1.raku b/challenge-147/ulrich-rieke/raku/ch-1.raku
new file mode 100644
index 0000000000..d98f9d615e
--- /dev/null
+++ b/challenge-147/ulrich-rieke/raku/ch-1.raku
@@ -0,0 +1,31 @@
+use v6 ;
+
+sub isTruncatablePrime( Int $n is copy --> Bool ) {
+  if ( ~$n ~~ /0/ ) {
+      return False ;
+  }
+  elsif ( not $n.is-prime ) {
+      return False ;
+  }
+  else {
+      while ( $n.is-prime ) {
+    if ( $n < 10 ) {
+        return True ;
+    }
+    else {
+        my $len = ~$n.chars ;
+        $n = $n % ( 10 ** ( $len - 1 ) ) ;
+    }
+      }
+  }
+}
+
+my @truncatables ;
+my $current = 1;
+while ( @truncatables.elems < 20 ) {
+  $current++ ;
+  if ( isTruncatablePrime( $current ) ) {
+      @truncatables.push( $current ) ;
+  }
+}
+say @truncatables ;
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index cc7cd86cad..ae8c3c8e5f 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,35 +1,13 @@
 {
-   "title" : {
-      "text" : "The Weekly Challenge - 147"
-   },
-   "legend" : {
-      "enabled" : 0
-   },
-   "subtitle" : {
-      "text" : "[Champions: 9] Last updated at 2022-01-12 09:58:23 GMT"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
-   },
-   "tooltip" : {
-      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
-      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
-      "followPointer" : 1
-   },
    "plotOptions" : {
       "series" : {
          "borderWidth" : 0,
          "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
+            "enabled" : 1,
+            "format" : "{point.y}"
          }
       }
    },
-   "chart" : {
-      "type" : "column"
-   },
    "drilldown" : {
       "series" : [
          {
@@ -43,8 +21,6 @@
             ]
          },
          {
-            "id" : "James Smith",
-            "name" : "James Smith",
             "data" : [
                [
                   "Perl",
@@ -54,11 +30,11 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "name" : "James Smith",
+            "id" : "James Smith"
          },
          {
-            "id" : "Luca Ferrari",
-            "name" : "Luca Ferrari",
             "data" : [
                [
                   "Raku",
@@ -68,16 +44,18 @@
                   "Blog",
                   5
                ]
-            ]
+            ],
+            "name" : "Luca Ferrari",
+            "id" : "Luca Ferrari"
          },
          {
-            "name" : "Mark Anderson",
             "data" : [
                [
                   "Raku",
                   2
                ]
             ],
+            "name" : "Mark Anderson",
             "id" : "Mark Anderson"
          },
          {
@@ -96,6 +74,7 @@
          },
          {
             "id" : "Peter Campbell Smith",
+            "name" : "Peter Campbell Smith",
             "data" : [
                [
                   "Perl",
@@ -105,10 +84,10 @@
                   "Blog",
                   1
                ]
-            ],
-            "name" : "Peter Campbell Smith"
+            ]
          },
          {
+            "id" : "Roger Bell_West",
             "data" : [
                [
                   "Perl",
@@ -123,17 +102,30 @@
                   1
                ]
             ],
-            "name" : "Roger Bell_West",
-            "id" : "Roger Bell_West"
+            "name" : "Roger Bell_West"
          },
          {
-            "id" : "Simon Proctor",
             "name" : "Simon Proctor",
             "data" : [
                [
                   "Raku",
                   2
                ]
+            ],
+            "id" : "Simon Proctor"
+         },
+         {
+            "id" : "Ulrich Rieke",
+            "name" : "Ulrich Rieke",
+            "data" : [
+               [
+                  "Perl",
+                  1
+               ],
+               [
+                  "Raku",
+                  1
+               ]
             ]
          },
          {
@@ -152,15 +144,28 @@
          }
       ]
    },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
+   "tooltip" : {
+      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
+      "followPointer" : 1,
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>"
+   },
    "xAxis" : {
       "type" : "category"
    },
+   "title" : {
+      "text" : "The Weekly Challenge - 147"
+   },
    "series" : [
       {
          "data" : [
             {
-               "name" : "Alexander Karelas",
                "drilldown" : "Alexander Karelas",
+               "name" : "Alexander Karelas",
                "y" : 1
             },
             {
@@ -169,19 +174,19 @@
                "name" : "James Smith"
             },
             {
-               "drilldown" : "Luca Ferrari",
                "y" : 7,
-               "name" : "Luca Ferrari"
+               "name" : "Luca Ferrari",
+               "drilldown" : "Luca Ferrari"
             },
             {
+               "y" : 2,
                "name" : "Mark Anderson",
-               "drilldown" : "Mark Anderson",
-               "y" : 2
+               "drilldown" : "Mark Anderson"
             },
             {
                "drilldown" : "Mohammad S Anwar",
-               "y" : 2,
-               "name" : "Mohammad S Anwar"
+               "name" : "Mohammad S Anwar",
+               "y" : 2
             },
             {
                "y" : 3,
@@ -189,23 +194,37 @@
                "name" : "Peter Campbell Smith"
             },
             {
+               "name" : "Roger Bell_West",
                "drilldown" : "Roger Bell_West",
-               "y" : 5,
-               "name" : "Roger Bell_West"
+               "y" : 5
             },
             {
-               "name" : "Simon Proctor",
+               "y" : 2,
                "drilldown" : "Simon Proctor",
-               "y" : 2
+               "name" : "Simon Proctor"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Ulrich Rieke",
+               "name" : "Ulrich Rieke"
             },
             {
+               "y" : 3,
                "name" : "W. Luis Mochan",
-               "drilldown" : "W. Luis Mochan",
-               "y" : 3
+               "drilldown" : "W. Luis Mochan"
             }
          ],
-         "colorByPoint" : 1,
-         "name" : "The Weekly Challenge - 147"
+         "name" : "The Weekly Challenge - 147",
+         "colorByPoint" : 1
       }
-   ]
+   ],
+   "legend" : {
+      "enabled" : 0
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "subtitle" : {
+      "text" : "[Champions: 10] Last updated at 2022-01-12 11:54:51 GMT"
+   }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index 7ece9a7405..3f7d100cef 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,28 +1,31 @@
 {
+   "yAxis" : {
+      "min" : 0,
+      "title" : {
+         "text" : null
+      }
+   },
    "xAxis" : {
-      "type" : "category",
       "labels" : {
          "style" : {
             "fontSize" : "13px",
             "fontFamily" : "Verdana, sans-serif"
          }
-      }
+      },
+      "type" : "category"
+   },
+   "tooltip" : {
+      "pointFormat" : "<b>{point.y:.0f}</b>"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge Contributions [2019 - 2021]"
+   },
+   "legend" : {
+      "enabled" : "false"
    },
    "series" : [
       {
          "name" : "Contributions",
-         "dataLabels" : {
-            "enabled" : "true",
-            "format" : "{point.y:.0f}",
-            "y" : 10,
-            "rotation" : -90,
-            "align" : "right",
-            "style" : {
-               "fontFamily" : "Verdana, sans-serif",
-               "fontSize" : "13px"
-            },
-            "color" : "#FFFFFF"
-         },
          "data" : [
             [
                "Blog",
@@ -30,34 +33,31 @@
             ],
             [
                "Perl",
-               7067
+               7068
             ],
             [
                "Raku",
-               4260
+               4261
             ]
-         ]
+         ],
+         "dataLabels" : {
+            "color" : "#FFFFFF",
+            "format" : "{point.y:.0f}",
+            "rotation" : -90,
+            "y" : 10,
+            "enabled" : "true",
+            "style" : {
+               "fontFamily" : "Verdana, sans-serif",
+               "fontSize" : "13px"
+            },
+            "align" : "right"
+         }
       }
    ],
    "chart" : {
       "type" : "column"
    },
    "subtitle" : {
-      "text" : "Last updated at 2022-01-12 09:58:23 GMT"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : null
-      },
-      "min" : 0
-   },
-   "tooltip" : {
-      "pointFormat" : "<b>{point.y:.0f}</b>"
-   },
-   "legend" : {
-      "enabled" : "false"
-   },
-   "title" : {
-      "text" : "The Weekly Challenge Contributions [2019 - 2021]"
+      "text" : "Last updated at 2022-01-12 11:54:51 GMT"
    }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index affa39cfaf..2dbe846b3c 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,9 +1,15 @@
 {
+   "xAxis" : {
+      "type" : "category"
+   },
+   "tooltip" : {
+      "pointFormat" : "<span style=\"color:{point.color}\">Challenge {point.name}</span>: <b>{point.y:f}</b><br/>",
+      "followPointer" : "true",
+      "headerFormat" : "<span style=\"font-size:11px\"></span>"
+   },
    "drilldown" : {
       "series" : [
          {
-            "id" : "001",
-            "name" : "001",
             "data" : [
                [
                   "Perl",
@@ -17,7 +23,9 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "name" : "001",
+            "id" : "001"
          },
          {
             "id" : "002",
@@ -38,7 +46,6 @@
             ]
          },
          {
-            "name" : "003",
             "data" : [
                [
                   "Perl",
@@ -53,9 +60,12 @@
                   9
                ]
             ],
+            "name" : "003",
             "id" : "003"
          },
          {
+            "id" : "004",
+            "name" : "004",
             "data" : [
                [
                   "Perl",
@@ -69,12 +79,9 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "004",
-            "id" : "004"
+            ]
          },
          {
-            "id" : "005",
             "name" : "005",
             "data" : [
                [
@@ -89,10 +96,11 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "id" : "005"
          },
          {
-            "id" : "006",
+            "name" : "006",
             "data" : [
                [
                   "Perl",
@@ -107,9 +115,10 @@
                   7
                ]
             ],
-            "name" : "006"
+            "id" : "006"
          },
          {
+            "id" : "007",
             "data" : [
                [
                   "Perl",
@@ -124,12 +133,9 @@
                   10
                ]
             ],
-            "name" : "007",
-            "id" : "007"
+            "name" : "007"
          },
          {
-            "id" : "008",
-            "name" : "008",
             "data" : [
                [
                   "Perl",
@@ -143,10 +149,11 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "name" : "008",
+            "id" : "008"
          },
          {
-            "id" : "009",
             "data" : [
                [
                   "Perl",
@@ -161,10 +168,10 @@
                   13
                ]
             ],
-            "name" : "009"
+            "name" : "009",
+            "id" : "009"
          },
          {
-            "id" : "010",
             "data" : [
                [
                   "Perl",
@@ -179,11 +186,10 @@
                   11
                ]
             ],
-            "name" : "010"
+            "name" : "010",
+            "id" : "010"
          },
          {
-            "id" : "011",
-            "name" : "011",
             "data" : [
                [
                   "Perl",
@@ -197,9 +203,12 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "011",
+            "id" : "011"
          },
          {
+            "name" : "012",
             "data" : [
                [
                   "Perl",
@@ -214,7 +223,6 @@
                   11
                ]
             ],
-            "name" : "012",
             "id" : "012"
          },
          {
@@ -255,6 +263,7 @@
          },
          {
             "id" : "015",
+            "name" : "015",
             "data" : [
                [
                   "Perl",
@@ -268,12 +277,9 @@
                   "Blog",
                   15
                ]
-            ],
-            "name" : "015"
+            ]
          },
          {
-            "id" : "016",
-            "name" : "016",
             "data" : [
                [
                   "Perl",
@@ -287,10 +293,11 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "name" : "016",
+            "id" : "016"
          },
          {
-            "name" : "017",
             "data" : [
                [
                   "Perl",
@@ -305,11 +312,10 @@
                   12
                ]
             ],
+            "name" : "017",
             "id" : "017"
          },
          {
-            "id" : "018",
-            "name" : "018",
             "data" : [
                [
                   "Perl",
@@ -323,10 +329,11 @@
                   "Blog",
                   14
                ]
-            ]
+            ],
+            "name" : "018",
+            "id" : "018"
          },
          {
-            "name" : "019",
             "data" : [
                [
                   "Perl",
@@ -341,10 +348,10 @@
                   13
                ]
             ],
+            "name" : "019",
             "id" : "019"
          },
          {
-            "id" : "020",
             "name" : "020",
             "data" : [
                [
@@ -359,10 +366,10 @@
                   "Blog",
                   13
                ]
-            ]
+            ],
+            "id" : "020"
          },
          {
-            "name" : "021",
             "data" : [
                [
                   "Perl",
@@ -377,10 +384,10 @@
                   10
                ]
             ],
+            "name" : "021",
             "id" : "021"
          },
          {
-            "name" : "022",
             "data" : [
                [
                   "Perl",
@@ -395,11 +402,11 @@
                   10
                ]
             ],
+            "name" : "022",
             "id" : "022"
          },
          {
             "id" : "023",
-            "name" : "023",
             "data" : [
                [
                   "Perl",
@@ -413,7 +420,8 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "name" : "023"
          },
          {
             "id" : "024",
@@ -434,6 +442,8 @@
             ]
          },
          {
+            "id" : "025",
+            "name" : "025",
             "data" : [
                [
                   "Perl",
@@ -447,12 +457,9 @@
                   "Blog",
                   12
                ]
-            ],
-            "name" : "025",
-            "id" : "025"
+            ]
          },
          {
-            "id" : "026",
             "data" : [
                [
                   "Perl",
@@ -467,7 +474,8 @@
                   10
                ]
             ],
-            "name" : "026"
+            "name" : "026",
+            "id" : "026"
          },
          {
             "data" : [
@@ -488,8 +496,6 @@
             "id" : "027"
          },
          {
-            "id" : "028",
-            "name" : "028",
             "data" : [
                [
                   "Perl",
@@ -503,10 +509,11 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "name" : "028",
+            "id" : "028"
          },
          {
-            "id" : "029",
             "data" : [
                [
                   "Perl",
@@ -521,7 +528,8 @@
                   12
                ]
             ],
-            "name" : "029"
+            "name" : "029",
+            "id" : "029"
          },
          {
             "data" : [
@@ -542,7 +550,7 @@
             "id" : "030"
          },
          {
-            "name" : "031",
+            "id" : "031",
             "data" : [
                [
                   "Perl",
@@ -557,10 +565,9 @@
                   9
                ]
             ],
-            "id" : "031"
+            "name" : "031"
          },
          {
-            "id" : "032",
             "data" : [
                [
                   "Perl",
@@ -575,9 +582,12 @@
                   10
                ]
             ],
-            "name" : "032"
+            "name" : "032",
+            "id" : "032"
          },
          {
+            "id" : "033",
+            "name" : "033",
             "data" : [
                [
                   "Perl",
@@ -591,9 +601,7 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "033",
-            "id" : "033"
+            ]
          },
          {
             "id" : "034",
@@ -615,7 +623,6 @@
          },
          {
             "id" : "035",
-            "name" : "035",
             "data" : [
                [
                   "Perl",
@@ -629,7 +636,8 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "name" : "035"
          },
          {
             "id" : "036",
@@ -651,6 +659,7 @@
          },
          {
             "id" : "037",
+            "name" : "037",
             "data" : [
                [
                   "Perl",
@@ -664,11 +673,10 @@
                   "Blog",
                   9
                ]
-            ],
-            "name" : "037"
+            ]
          },
          {
-            "name" : "038",
+            "id" : "038",
             "data" : [
                [
                   "Perl",
@@ -683,11 +691,9 @@
                   12
                ]
             ],
-            "id" : "038"
+            "name" : "038"
          },
          {
-            "id" : "039",
-            "name" : "039",
             "data" : [
                [
                   "Perl",
@@ -701,9 +707,12 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "name" : "039",
+            "id" : "039"
          },
          {
+            "name" : "040",
             "data" : [
                [
                   "Perl",
@@ -718,12 +727,9 @@
                   10
                ]
             ],
-            "name" : "040",
             "id" : "040"
          },
          {
-            "id" : "041",
-            "name" : "041",
             "data" : [
                [
                   "Perl",
@@ -737,9 +743,12 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "name" : "041",
+            "id" : "041"
          },
          {
+            "id" : "042",
             "data" : [
                [
                   "Perl",
@@ -754,12 +763,10 @@
                   11
                ]
             ],
-            "name" : "042",
-            "id" : "042"
+            "name" : "042"
          },
          {
             "id" : "043",
-            "name" : "043",
             "data" : [
                [
                   "Perl",
@@ -773,9 +780,11 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "name" : "043"
          },
          {
+            "id" : "044",
             "data" : [
                [
                   "Perl",
@@ -790,11 +799,9 @@
                   11
                ]
             ],
-            "name" : "044",
-            "id" : "044"
+            "name" : "044"
          },
          {
-            "id" : "045",
             "name" : "045",
             "data" : [
                [
@@ -809,7 +816,8 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "id" : "045"
          },
          {
             "name" : "046",
@@ -830,6 +838,7 @@
             "id" : "046"
          },
          {
+            "name" : "047",
             "data" : [
                [
                   "Perl",
@@ -844,11 +853,10 @@
                   10
                ]
             ],
-            "name" : "047",
             "id" : "047"
          },
          {
-            "id" : "048",
+            "name" : "048",
             "data" : [
                [
                   "Perl",
@@ -863,11 +871,10 @@
                   12
                ]
             ],
-            "name" : "048"
+            "id" : "048"
          },
          {
             "id" : "049",
-            "name" : "049",
             "data" : [
                [
                   "Perl",
@@ -881,9 +888,12 @@
                   "Blog",</