1:root	0.0 0.0 	2:left	3:right
2	0.0 0.0		4:right	5:left
3	0.0 0.0		6:left	7:right
4	0.0 0.0		8:left
5	0.0 0.0		11:left	12:right
6	0.0 0.0		
7	0.0 0.0		9:left
8	0.0 0.0
9	0.0 0.0		10:left
10	0.0 0.0
11	0.0 0.0	
12	0.0 0.0
