| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must have [verb] a [noun] | 14 |
|
| 2 | it must have [verb] a [noun sg] | 14 |
|
| 3 | it must have [vb pp] a [noun] | 14 |
|
| 4 | it must have [verb] a [noun] | 13 |
|
| 5 | it must have cost a [noun] | 5 |
|
| 6 | it must have cost a [noun] | 5 |
|
