msd_4 msd_2

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

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

2 0
0 0 -> 0
0 1 -> 1
1 1 -> 2
2 0 -> 5
2 1 -> 6
3 1 -> 2

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

4 1
0 0 -> 5
0 1 -> 6
1 0 -> 4
2 0 -> 0
2 1 -> 1
3 0 -> 4

5 0
2 0 -> 5
2 1 -> 6
3 1 -> 2

6 1
0 0 -> 5
0 1 -> 6
1 0 -> 4
3 0 -> 3