| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [verb] [prep] a | 329 |
|
| 2 | [modal v] [adv] [verb] as a | 245 |
|
| 3 | could [adv] [verb] as [art] | 36 |
|
| 4 | could [adv] [verb] as [art] | 36 |
|
| 5 | could [adv] [verb] as a | 30 |
|
