| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [conj] [pron] could [verb] | 713 |
|
| 2 | [vb past] [noun prp] [conj] [pron] [verb] | 557 |
|
| 3 | [noun prp] [conj] [pron] could [verb] | 176 |
|
| 4 | [vb past] [noun prp] [conj] [pron] could | 36 |
|
| 5 | [vb past] [noun prp] [pron] could [verb] | 6 |
|
