msd_fib msd_fib

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

1 0
0 0 -> 3

2 1

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

4 1
0 0 -> 4
1 0 -> 5

5 1
0 0 -> 4
