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my $k1a = "a$;b"; my $k1b = 'c'; ... $multi{$k2a, $k2b} = 2; print $multi{$k1a, $k1b}; # 2!!
($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,