| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [adv] [verb] [prep] a | 1289 |
|
| 2 | could [adv] [verb] [prep] a | 329 |
|
| 3 | [conj] could [adv] [verb] [prep] | 167 |
|
| 4 | [conj] could [adv] [verb] a | 65 |
|
| 5 | [conj] could [verb] [prep] a | 48 |
|
