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