| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [verb] [pers pn] | 3156 |
|
| 2 | [conj] could [not/n't] [verb] | 881 |
|
| 3 | [conj] [not/n't] [verb] [pers pn] | 390 |
|
| 4 | [conj] could [verb] [pers pn] | 140 |
|
| 5 | [conj] could [not/n't] [pers pn] | 14 |
|
