| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [vb mod] be [verb] to | 30 |
|
| 2 | but [vb mod] be [vb pp] to | 29 |
|
| 3 | but may be [verb] to | 6 |
|
| 4 | but can be [verb] to | 5 |
|
| 5 | but must be [verb] to | 5 |
|
