4	0	0	
4	7	0
1	5	0
1	2	0
1	4	0
1	5	0
1	4	7
4	7	0
1	2	0
1	2	0
1	3	0
1	2	0
1	6	0
1	3	0
1	5	0
1	3	0
1	6	0
