| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [vb infin] | 21338 |
|
| 2 | i could [vb infin] | 8151 |
|
| 3 | i could [not/n't] | 5129 |
|
| 4 | i [not/n't] [vb infin] | 77 |
|
