| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [vb infin] [prep] | 2116 |
|
| 2 | [modal v] [not/n't] [vb infin] for | 1078 |
|
| 3 | [vb mod] [not/n't] [vb infin] for | 1078 |
|
| 4 | could [adv] [vb infin] for | 350 |
|
| 5 | could [not/n't] [verb] for | 203 |
|
| 6 | could [not/n't] [vb infin] for | 203 |
|
