Score	X1	X2	X3	X4
1	20	1	1	0	0
2	22	1	1	0	0
3	8	1	0	1	0
4	9	1	-1	-1	0
5	13	1	-1	-1	0
6	4	-1	0	0	1
7	8	-1	0	0	1
8	16	-1	0	0	-1
9	20	-1	0	0	-1