| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [vb infin] [noun sg] | 440 |
|
| 2 | who could [not/n't] [vb infin] | 336 |
|
| 3 | who could [vb infin] [noun sg] | 56 |
|
