1, 2, 3, ___
4
5, 6, 7, ___
8
1, 2, ___
3
2, 3, 4, ___
5
3, 4, 5, ___
6
0, 1, ___
2
0, ___
1
5, 6, ___
7
6, 7, 8, ___
9
7, 8, 9, ___
10
8, 9, 10, ___
11
10, 11, ___
12
10, 11, 12, ___
13
12, 13, ___
14
12, 13, 14, ___
15
13, 14, 15, ___
16
