1	0	{2,3}
2	INF	{4,5,6,13}
3	INF	{}
4	INF	{7,8}
5	INF	{9,10}
6	INF	{7,9,11}
7	INF	{}
8	INF	{12,13}
9	INF	{}
10	INF	{}
11	INF	{}
12	INF	{}
13	INF	{14}
14	INF	{}