| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [verb] to | 356 |
|
| 2 | [adj] could not [verb] | 178 |
|
| 3 | [adj] could [verb] to | 117 |
|
| 4 | [adj] not [verb] to | 38 |
|
