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  1. or download this
    print map{ print wantarray(); (1,2,3) } 1;;
Use of uninitialized value in print at (eval 19) line 1, <STDIN> line 
+11.

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  2. or download this
    print scalar map{ print wantarray(); (1,2,3) } 1;;
Use of uninitialized value in print at (eval 20) line 1, <STDIN> line 
+12.

3
  3. or download this
    print do{ print wantarray(); (1,2,3) };;
Use of uninitialized value in print at (eval 23) line 1, <STDIN> line 
+15.

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