| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have a [noun sg] | 4217 |
|
| 2 | must [vb infin] a [noun sg] | 985 |
|
| 3 | must [verb] a [noun sg] | 985 |
|
| 4 | must have [art] [noun sg] | 380 |
|
| 5 | must have a [noun] | 284 |
|
| 6 | must have a [noun sg] | 279 |
|
