| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [verb] it [prep] | 162 |
|
| 2 | [modal v] not do it [prep] | 109 |
|
| 3 | could not do [pron] [prep] | 61 |
|
| 4 | could [adv] do it [prep] | 30 |
|
| 5 | could not do it [prep] | 19 |
|
| 6 | could not do [pers pn] [prep] | 19 |
|
