| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but we [modal v] [vb infin] | 940 |
|
| 2 | but [pron] must [vb infin] | 910 |
|
| 3 | [conj] we must [vb infin] | 582 |
|
| 4 | but we must [verb] | 137 |
|
