| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [vb base] [verb] [prep] | 369 |
|
| 2 | [conj] [pron] [vb base] [v-ing] [prep] | 333 |
|
| 3 | when [pron] [verb] [v-ing] [prep] | 128 |
|
