| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but the [noun] must be [verb] | 34 |
|
| 2 | but the [noun] must be [vb pp] | 31 |
|
| 3 | but the [noun sg] must be [verb] | 26 |
|
| 4 | but the [noun pl] must be [verb] | 7 |
|
