| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [be] [vb pp] to be | 541 |
|
| 2 | could [adv] [be] [vb pp] to | 231 |
|
| 3 | could [be] [vb pp] to be | 149 |
|
| 4 | could [adv] [be] [vb pp] be | 10 |
|
