| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] it [adv] | 490 |
|
| 2 | [modal v] [vb infin] it up | 431 |
|
| 3 | could [vb infin] [pron] up | 138 |
|
| 4 | could [verb] it up | 63 |
|
