Step 1

Step 2

2 or 3 can cut in first. In this case, 2 cut in first.

Step 3

Step 4

Step 5

3 can choose to bump 4

Step 6

4 can choose to bump 1

Step 7

Step 8

Step 9

2 or 3 can cut in first. In this case, 3 cut in first.

Step 10

2 can choose to bump 1

Step 11