| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [vb pp] [art] [noun] | 56698 |
|
| 2 | must have [vb pp] [art] | 771 |
|
| 3 | must have [art] [noun] | 400 |
|
| 4 | must have [vb pp] [noun] | 262 |
|
