| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [pron] could [adv] [vb infin] [prep] | 90 |
|
| 2 | [vb past] [pers pn] could [adv] [vb infin] [prep] | 90 |
|
| 3 | [vb past] it [modal v] [adv] [vb infin] [prep] | 25 |
|
| 4 | [vb past] it [vb mod] [adv] [vb infin] [prep] | 25 |
|
| 5 | [verb] it could [adv] [vb infin] [prep] | 18 |
|
| 6 | [vb past] it could [adv] [vb infin] [prep] | 6 |
|
| 7 | [vb past] it could [adv] [verb] [prep] | 6 |
|
| 8 | [vb past] it could [adv] [vb infin] [prep] | 6 |
|
