| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and could [adv] [vb infin] [prep] a | 8 |
|
| 2 | and could [adv] [verb] [prep] a | 8 |
|
| 3 | and could [not/n't] [verb] [prep] a | 5 |
|
| 4 | and could not [verb] [prep] a | 5 |
|
