| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb mod] [be] [prep] | 550 |
|
| 2 | they [modal v] [be] [prep] | 550 |
|
| 3 | [pron] could [be] [prep] | 381 |
|
| 4 | [pers pn] could [be] [prep] | 330 |
|
| 5 | they could [be] [prep] | 49 |
|
| 6 | they could [be] [prep] | 49 |
|
