| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pers pn] [be] [v-ing] | 3571 |
|
| 2 | but [pers pn] [be] [v-ing] | 2288 |
|
| 3 | but when [pers pn] [be] | 351 |
|
