msd_s2 msd_s2

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

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

2 1
0 0 -> 5
0 1 -> 6
0 2 -> 1
1 2 -> 7

3 0
1 0 -> 8

4 0
0 0 -> 5
0 1 -> 6
0 2 -> 1

5 1
0 2 -> 7

6 0
0 0 -> 8
0 1 -> 1
1 1 -> 2
1 2 -> 3

7 0
0 0 -> 5

8 1
0 0 -> 6
0 1 -> 1
1 1 -> 2
1 2 -> 3
