| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [modal v] [verb] | 1652 |
|
| 2 | but [vb mod] [verb] | 1652 |
|
| 3 | [conj] must [verb] | 730 |
|
| 4 | but must [verb] | 97 |
|
