| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] when [pron] [verb] | 180 |
|
| 2 | [Wh det] [be] [v-ing] [pron] [verb] | 32 |
|
| 3 | [Wh det] [be] [v-ing] when [pron] | 7 |
|
