my @to-five = 0..5; my @from-ten = (5..10).reverse; for flat @to-five Z @from-ten -> Int $i, Int $j { say "$i $j" } say "--- or ---"; for @from-ten.kv -> Int $i, Int $j { say "$i $j" } say "--- or ---"; for ^6 -> $i { say "$i { 10 - $i }" } say "--- or ---"; loop (my $i = 0, my $j = 10; $i <= 5; $i++, $j--) { say "$i $j" }