0, 1;
1, 2;
4, 3;
5, 2;
8, 3;
9, 4;
12, 5;
13, 4;
16, 5;
19, 2;
22, 3;
23, 2;
26, 3;
27, 4;
30, 5;
31, 4;
34, 5;
35, 2;
