msd_s2 msd_s2

0 1
0 0 -> 0
1 0 -> 1
2 0 -> 2

1 1
0 0 -> 3
0 1 -> 4
1 1 -> 1
2 1 -> 2

2 0
0 1 -> 3
0 2 -> 4

3 1
0 2 -> 5

4 0
0 0 -> 6
1 0 -> 1
2 0 -> 2

5 0
0 0 -> 3

6 1
0 0 -> 4
1 0 -> 1
2 0 -> 2
