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+#!python
+
+#
+# Perl Weekly Challenge 254
+# Task 2
+#
+# See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-254>
+#
+
+import sys
+
+# task implementation
+# the return value will be printed
+def task_2( args ):
+    word = args[ 0 ].lower()
+    vowels =  list( reversed( list( filter( lambda x: x in ('a','e','i','o','u'), word ) ) ) )
+    output = ''
+    for letter in word:
+        if letter not in ( 'a', 'e', 'i', 'o', 'u' ) or len( vowels ) == 0
+            output += letter
+        else:
+            output += vowels.pop( 0 )
+
+    return output
+
+
+# invoke the main without the command itself
+if __name__ == '__main__':
+    print( task_2( sys.argv[ 1: ] ) )