2-1
1-4,2-2
1-4
2-4
2-3,2-4
1-3
1-2,1-4,2-3,2-4
1-1
2-2
2-3
0.5R1,2R5
4-2,4-3
1-1,2-1
2-2,2-3
4-4
1-3,1-4
1-2
2-3,4-1
1-2不出了
2-1,2-2,2-3,3-1,4-1,4-2
2-1,2-2
1-3,1-4,2-4