| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [be] [verb] [prep] a | 1051 |
|
| 2 | could [be] [verb] [prep] a | 971 |
|
| 3 | [det] could [be] [verb] [prep] | 405 |
|
| 4 | [det] could [verb] [prep] a | 35 |
|
| 5 | [det] could [be] [prep] a | 6 |
|
