| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [ex0] must have [been] [noun] | 21 |
|
| 2 | [ex0] must have be [noun] | 21 |
|
| 3 | [ex0] must have [be] [noun] | 21 |
|
| 4 | there must have [be] [noun] | 21 |
|
| 5 | [ex0] must have been [noun] | 21 |
|
| 6 | [ex0] must have [be] [noun pl] | 11 |
|
| 7 | [ex0] must have [be] [noun sg] | 10 |
|
