| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but we must [vb infin] | 137 |
|
| 2 | but we must have | 15 |
|
| 3 | but we must remember | 12 |
|
| 4 | but we must go | 7 |
|
| 5 | but we must make | 5 |
|
| 6 | but we must keep | 5 |
|
