| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] when [v-ing] | 152 |
|
| 2 | [coord] only when | 118 |
|
| 3 | [coord] only [v-ing] | 51 |
|
| 4 | only when [v-ing] | 24 |
|
