| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [be] [verb] [adv] | 257 |
|
| 2 | [vb mod] [adv] [be] [verb] down | 47 |
|
| 3 | [modal v] [adv] [be] [verb] down | 47 |
|
| 4 | could [adv] [be] [verb] down | 12 |
|
| 5 | could [adv] [be] [verb] down | 7 |
|
