| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [vb pp] [prep] | 7113 |
|
| 2 | [noun sg] could be [vb pp] | 5040 |
|
| 3 | [noun sg] be [vb pp] [prep] | 1198 |
|
| 4 | [noun sg] could be [prep] | 226 |
|
