| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [be] [verb] [prep] a | 3462 |
|
| 2 | could [be] [verb] [prep] a | 971 |
|
| 3 | [adv] could [be] [verb] [prep] | 76 |
|
| 4 | [adv] could [verb] [prep] a | 11 |
|
