| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] be [vb pp] [prep] | 30285 |
|
| 2 | could be [vb pp] [prep] | 7114 |
|
| 3 | could [adv] be [vb pp] | 4744 |
|
| 4 | could [adv] be [prep] | 174 |
|
| 5 | could [adv] [vb pp] [prep] | 11 |
|
