| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pers pn] [be] [v-ing] | 3571 |
|
| 2 | [noun prp] [pers pn] [be] [v-ing] | 486 |
|
| 3 | [noun prp] when [pers pn] [be] | 438 |
|
