$_=shift||"ciolnaot";
my $s = join'?',(sort split//),"";
while( <> ){
    chomp;
    next unless length == 4;
    my $t=join'',sort split//;
    print "$_\n" if $t=~/^$s$/;
}

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In reply to Re: N Permutations of M Items by I0
in thread N Permutations of M Items by mt2k

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