| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [pron] [adv] [vb infin] [pers pn] | 144 |
|
| 2 | [modal v] we [adv] [vb infin] [pers pn] | 36 |
|
| 3 | could we [adv] [vb infin] [pron] | 8 |
|
| 4 | could we [adv] [verb] [pers pn] | 6 |
|
