| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i could not [verb] | 4344 |
|
| 2 | i could not [vb infin] | 4342 |
|
| 3 | i [modal v] not say | 835 |
|
| 4 | [pron] could not say | 187 |
|
| 5 | i could [adv] say | 89 |
|
| 6 | i could not say | 69 |
|
