use strict; use warnings; my $i; chomp(my $message=<>); $message=join(" ",(split(//, $message))); my $j=0; for $i([A-Z]){ $message=~s/$i/($j+6)/i; $j++; } my $g=6; for $i([A-Z]){ $message=~s/$g/$i/i; $g++; } print $message;