| 步骤 | 1 | 2 | 3 |
| 过程 | G1 | X6 | X6 |
|
| G2 | X7 | X7 |
|
| X1 | G2 | X8 |
|
| X2 | X1 | X9 |
|
| X3 | X2 | X10 |
|
| X4 | X3 | X1 |
|
| X5 | X4 | X2 |
|
|
| X5 | X3 |
|
|
|
| X4 |
|
|
|
| X5 |