18	0	0	0	20	0	0	0	0	1	18	1	
1	0	19	0	0	0	0	1	0	18	0	0	
0	0	0	0	0	20	20	0	19	1	2	1	
1	20	1	20	0	0	0	19	1	0	0	18	
