| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [adj] [pron] could [be] [prep] | 7 |
|
| 2 | [Wh adv] [adj] [pron] could [be] [prep] | 7 |
|
| 3 | [Wh adv] [pron] could [be] [verb] [prep] | 25 |
|
| 4 | [Wh adv] [pron] could [be] [vb pp] [prep] | 24 |
|
