| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] [v-ing] [prep] | 41273 |
|
| 2 | 've [be] [v-ing] [prep] | 879 |
|
| 3 | 've [pron] [be] [v-ing] | 29 |
|
