Element #0 0: 4 13 5 19 0 21 7 15 8 Element #1 0: 5 14 6 21 1 23 8 16 9 Element #2 0: 7 15 8 20 2 22 10 17 11 Element #3 0: 8 16 9 22 3 24 11 18 12