| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] [det] | 4282 |
|
| 2 | [modal v] [be] [det] | 4282 |
|
| 3 | could [be] [adj] | 2918 |
|
| 4 | could [be] [det] | 315 |
|
