msd_2

0 1
0 -> 0
1 -> 1

1 1
0 -> 2
1 -> 3

2 1
0 -> 4
1 -> 2

3 0
0 -> 5
1 -> 6

4 1
0 -> 7
1 -> 3

5 0
0 -> 3
1 -> 2

6 1
0 -> 5
1 -> 6

7 0
0 -> 8
1 -> 2

8 0
0 -> 7
1 -> 3
