| AE |
| EB |
| DF |
| FC |
∴
| AE |
| EB |
| DF |
| FC |
∴
| AB |
| EB |
| DC |
| FC |
(2)∵
| AE |
| EB |
| DF |
| FC |
∴
| EB |
| AE |
| FC |
| DF |
∴
| EB |
| AE |
| FC |
| DF |
∴
| EB+AE |
| AE |
| FC+DF |
| DF |
∴
| AB |
| AE |
| DC |
| DF |
| AE |
| EB |
| DF |
| FC |

| AB |
| EB |
| DC |
| FC |
| AB |
| AE |
| DC |
| DF |
| AE |
| EB |
| DF |
| FC |
| AE |
| EB |
| DF |
| FC |
| AB |
| EB |
| DC |
| FC |
| AE |
| EB |
| DF |
| FC |
| EB |
| AE |
| FC |
| DF |
| EB |
| AE |
| FC |
| DF |
| EB+AE |
| AE |
| FC+DF |
| DF |
| AB |
| AE |
| DC |
| DF |