| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [verb] a | 1494 |
|
| 2 | [adv] [verb] of a | 450 |
|
| 3 | could [adv] [verb] of | 236 |
|
| 4 | could [verb] of a | 25 |
|
