| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but they could be [vb pp] [prep] | 7 |
|
| 2 | but they could be [vb pp] [prep] | 7 |
|
| 3 | but they could [be] [vb pp] [prep] | 7 |
|
| 4 | but they could [be] [vb pp] [prep] | 7 |
|
