| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [prep] [art] [noun] | 2215 |
|
| 2 | could [verb] [prep] [art] [noun sg] | 1903 |
|
| 3 | [modal v] [verb] [prep] [art] time | 96 |
|
| 4 | could [verb] [prep] [art] time | 11 |
|
