,inter_no,node_id,inter_type
0,175,i0,parent
1,175,u00,child
2,176,i1,parent
3,177,i2,parent
4,177,u20,child
5,178,i3,parent
6,178,u30,child
7,178,u31,child
8,178,u32,child
9,201,i8,parent
10,202,i9,parent
11,206,i7,parent
12,210,i6,parent
13,210,u60,child
14,211,c30,parent