0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
17	0
16	0
19	0
18	0
21	0
20	0
23	0
22	0
25	0
24	1
27	0
26	0
29	0
28	0
30	0
