0 1
0 1 2
0 1 2 3
0 1 2 3 4
0 9 8 7 6 5
0 1 2 3 4 5
0 1
0 1 2
0 1 2 3
0 9 8 7 6 5 4
0 1 2 3 4
0 9 8 7 6 5
0 1
0 1 2
0 3
0 1 2 3
0 1 4
0 1 5
4 4 12