| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] could be [vb pp] | 1050 |
|
| 2 | could be [vb pp] [adj] | 239 |
|
| 3 | [conj] could be [adj] | 104 |
|
| 4 | [conj] be [vb pp] [adj] | 28 |
|
