| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [vb infin] to be [adj] | 18 |
|
| 2 | could not [vb infin] to be [adj] | 13 |
|
| 3 | could [not/n't] fail to be [adj] | 6 |
|
| 4 | could n't [vb infin] to be [adj] | 5 |
|
