msd_2
0 0
0 -> 0 
1 -> 1 

1 0
0 -> 2 
1 -> 3 

2 1
0 -> 4 
1 -> 5 

3 1
0 -> 6 
1 -> 7 

4 0
0 -> 8 
1 -> 9 

5 0
0 -> 10 
1 -> 11 

6 0
0 -> 12 
1 -> 7 

7 1
0 -> 13 
1 -> 14 

8 1
0 -> 15 
1 -> 16 

9 1
0 -> 17 
1 -> 18 

10 0
0 -> 2 
1 -> 19 

11 0
0 -> 4 
1 -> 5 

12 1
0 -> 12 
1 -> 7 

13 0
0 -> 15 
1 -> 16 

14 1
0 -> 0 
1 -> 18 

15 0
0 -> 20 
1 -> 21 

16 0
0 -> 22 
1 -> 23 

17 1
0 -> 0 
1 -> 1 

18 1
0 -> 2 
1 -> 3 

19 0
0 -> 6 
1 -> 7 

20 1
0 -> 24 
1 -> 5 

21 1
0 -> 6 
1 -> 25 

22 0
0 -> 8 
1 -> 14 

23 1
0 -> 15 
1 -> 26 

24 1
0 -> 8 
1 -> 9 

25 0
0 -> 13 
1 -> 14 

26 1
0 -> 22 
1 -> 23