ch-1.raku « raku « 2colours « challenge-154 - github/perlweeklychallenge-club.git - Unnamed repository; edit this file 'description' to name the repository.

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#!/usr/bin/env raku

my @given-perms = $*IN.get.split(', ');

'PERL'.comb.permutations.map(*.join) (-) @given-perms andthen .keys.sort.join(', ').say;