| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [prep] [det] | 834 |
|
| 2 | could be [prep] [adj] | 174 |
|
| 3 | could be [prep] [det] | 72 |
|
| 4 | could [be] [prep] [det] | 72 |
|
| 5 | could [be] [prep] [det] | 72 |
|
