0:{}:{}
1:{2}:{(2,1)}
2:{1}:{(0,1),(1,1),(7,1)}
3:{2}:{(0,1),(5,1)}
4:{2}:{(0,1),(6,1)}
5:{1}:{(3,1),(10,1)}
6:{1}:{(4,1),(11,1)}
7:{2}:{(2,1)}
8:{1,2}:{(5,1),(7,1)}
9:{1,2}:{(6,1),(7,1)}
10:{2}:{(5,1)}
11:{2}:{(6,1)}