| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they could [not/n't] [vb infin] | 1267 |
|
| 2 | which they could [vb infin] | 156 |
|
| 3 | which could [not/n't] [vb infin] | 53 |
|
| 4 | which they could [not/n't] | 42 |
|
