| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [be] [vb pp] [adj] [prep] [verb] | 7 |
|
| 2 | could [be] [vb pp] [adj] [prep] [verb] | 7 |
|
| 3 | could [be] [vb pp] [adj] [conj] [verb] | 6 |
|
