| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] not [verb] to | 2367 |
|
| 2 | could not [verb] [prep] | 2120 |
|
| 3 | could not [verb] [prep] | 2119 |
|
| 4 | could [adv] [verb] to | 714 |
|
| 5 | could not [verb] to | 356 |
|
