| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [verb] do better | 10 |
|
| 2 | [pers pn] could [verb] do better | 10 |
|
| 3 | could [adv] [verb] do better | 11 |
|
| 4 | could not [verb] do better | 10 |
|
| 5 | could [not/n't] [verb] do better | 10 |
|
| 6 | could n't [verb] do better | 8 |
|
| 7 | could [verb] do better [conj] | 5 |
|
