| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [be] [v-ing] [pron] | 789 |
|
| 2 | had [be] [v-ing] [pron] | 510 |
|
| 3 | who had [be] [v-ing] | 470 |
|
| 4 | who had [be] [pron] | 29 |
|
