| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [prep] [be] [adj] | 642 |
|
| 2 | [modal v] [prep] [be] [adj] | 642 |
|
| 3 | could [prep] [be] [adj] | 11 |
|
| 4 | could [prep] [be] [adj] | 7 |
|
| 5 | could [prep] [be] [adj] | 7 |
|
