4 6 0 0 0 0 6 0 0 2 3 1 0 1 -2 1 4 3 7 0 0 2 6 0 -2 2 6
Case 1: 6 0 6 2 3 1 1 -2 1 4 Case 2: 7 2 6 -2 2 6