| 4 4 | | 3 | | 1. 7 28 | | | | | 3 + 2 ︔ | 2. 3 + 2 | 7 31 8 3 | | 3 + 2 | | | 3 + | 2 | ︔ | 3. | 8 4 | 3 + 2 | | | | |