| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but you must have [vb pp] | 22 |
|
| 2 | but you must have [verb] | 22 |
|
| 3 | but you must have [art] | 5 |
|
| 4 | but you must have [art] | 5 |
|
