| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] [prep] [be] [adv] | 221 |
|
| 2 | could [be] [vb pp] [prep] [adv] | 200 |
|
| 3 | could [be] [vb pp] [prep] [be] | 166 |
|
| 4 | could [be] [vb pp] [be] [adv] | 8 |
|
