| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [vb pp] [art] | 757 |
|
| 2 | [adj] must have [vb pp] | 113 |
|
| 3 | [adj] must have [art] | 17 |
|
| 4 | [adj] have [vb pp] [art] | 16 |
|
