| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] be [vb pp] [conj] | 227 |
|
| 2 | could be [vb pp] [conj] [adj] | 154 |
|
| 3 | [not/n't] be [vb pp] [conj] [adj] | 154 |
|
| 4 | could [not/n't] be [vb pp] [adj] | 39 |
|
