| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [be] [v-ing] [prep] | 3502 |
|
| 2 | 've [be] [v-ing] [prep] | 876 |
|
| 3 | they 've [be] [v-ing] | 291 |
|
| 4 | they 've [be] [prep] | 98 |
|
