| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [vb pp] [prep] a [noun sg] | 335 |
|
| 2 | must have [vb pp] a [noun sg] | 187 |
|
| 3 | must have [vb pp] [prep] a | 71 |
|
| 4 | must have [vb pp] [prep] [noun sg] | 62 |
|
