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(select y from generate_series(18,23) y) (select s from generate_series(1,20) s)
(18..23) (1..20)
for my $s (1..20) { if ($s == any(18..23) ) { print $s; } }
$h=$ENV{HOME};my@q=split/\n\n/,`cat $h/.quotes`;$s="$h/." ."signature";$t=`cat $s`;print$t,"\n",$q[rand($#q)],"\n";