sub induced {

    my (@z) = @_;

    my $triplet = $trip[0];

    my %Pie;
    undef @Pie{ @z };
    delete @Pie{ @$triplet };
    print "@$triplet\n" if keys(%Pie) <= (@z - @$triplet);
    
    return @$triplet;
    
    }
##</code><code>##

component 2 = e d
$VAR1 = 'b';
$VAR2 = 'c';
$VAR3 = 'a';
component 1 = c a b
b c a
$VAR1 = 'b';
$VAR2 = 'c';
$VAR3 = 'a';