| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it must have a | 5 |
|
| 2 | it must have be a | 145 |
|
| 3 | it must have [been] a | 145 |
|
| 4 | it must have [be] a | 145 |
|
| 5 | it must have been a | 145 |
|
| 6 | it must have [vb pp] a | 37 |
|
| 7 | it must have [verb] a | 37 |
|
| 8 | it must have take a | 8 |
|
| 9 | it must have taken a | 8 |
|
| 10 | it must have seem a | 7 |
|
| 11 | it must have seemed a | 7 |
|
| 12 | it must have have a | 5 |
|
| 13 | it must have cost a | 5 |
|
| 14 | it must have cost a | 5 |
|
| 15 | it must have had a | 5 |
|
| 16 | it must have a [noun] | 15 |
|
| 17 | it must have a [noun sg] | 15 |
|
| 18 | it must have a [adj] | 8 |
|
| 19 | it must have a [adj] | 7 |
|
