| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it could [not/n't] [vb infin] | 469 |
|
| 2 | and could [not/n't] [vb infin] | 466 |
|
| 3 | and it could [vb infin] | 90 |
|
| 4 | and it could [not/n't] | 29 |
|
