1original graph: 20 --> 3 2 3 31 --> 3 42 --> 0 53 --> 2 6 7removing edges (0,3) 80 --> 2 91 --> 3 102 --> 0 113 --> 2 12removing edge (0,2) and (3, 2) 130 --> 141 --> 3 152 --> 0 163 --> 17