| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] must have [vb pp] a [noun] | 116 |
|
| 2 | [pers pn] must have [verb] a [noun] | 116 |
|
| 3 | [pers pn] [modal v] have taken a [noun] | 36 |
|
| 4 | [pers pn] must have taken [art] [noun] | 14 |
|
| 5 | [pron] must have taken a [noun] | 8 |
|
| 6 | [pers pn] must [verb] taken a [noun] | 8 |
|
| 7 | [pers pn] must have take a [noun] | 8 |
|
