| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [be] [v-ing] [prep] | 3588 |
|
| 2 | [vb past] [be] [v-ing] [prep] | 2310 |
|
| 3 | they [vb past] [be] [v-ing] | 426 |
|
| 4 | they [vb past] [be] [prep] | 292 |
|
| 5 | they [vb past] [v-ing] [prep] | 145 |
|
