| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [vb pp] to be a | 14 |
|
| 2 | could be [vb pp] [prep] be a | 14 |
|
| 3 | could be [vb pp] to be a | 14 |
|
| 4 | could be said [prep] be a | 8 |
|
