| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when he [vb past] so | 18 |
|
| 2 | when he do so | 15 |
|
| 3 | when he did so | 12 |
|
| 4 | when he have so | 5 |
|
| 5 | when he [vb -s] so | 5 |
|
