print "$_ => (@{$items{$_}})\n" for sort keys %items ; __END__ 1 => (0 1 2 3 4 5 6 7) 2 => (8 9 10 11 12 13) 3 => (14 15) 4 => (16 17 18 19 20) 5 => (21 22 23 24)