| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | can only be [verb] [prep] be | 6 |
|
| 2 | can only be [verb] to be | 6 |
|
| 3 | can only be [vb pp] [prep] be | 6 |
|
| 4 | can only be [verb] to be | 6 |
|
