| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [ex0] [be] for | 20 |
|
| 2 | could [ex0] [be] [prep] | 12 |
|
| 3 | could [ex0] [be] [prep] | 12 |
|
| 4 | could [pron] [be] for | 10 |
|
| 5 | could [ex0] [be] for | 7 |
|
| 6 | could [ex0] [be] for | 7 |
|
