| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] when they [vb past] [pron] | 80 |
|
| 2 | [v-ing] when [pron] [vb past] [pron] | 51 |
|
| 3 | [v-ing] [conj] they [vb past] [pron] | 48 |
|
| 4 | [v-ing] when they [verb] [pron] | 14 |
|
