msd_fib
0 1
0 -> 0
1 -> 1
1 2
0 -> 2
2 4
0 -> 3
1 -> 4
3 6
0 -> 5
1 -> 6
4 10
0 -> 7
5 6
0 -> 8
1 -> 9
6 6
0 -> 10
7 8
0 -> 11
1 -> 12
8 6
0 -> 5
1 -> 13
9 8
0 -> 14
10 8
0 -> 15
1 -> 16
11 6
0 -> 11
1 -> 12
12 6
0 -> 11
13 6
0 -> 14
14 8
0 -> 14
1 -> 9
15 8
0 -> 10
1 -> 12
16 8
0 -> 11