| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must have been some [noun] | 31 |
|
| 2 | [pron] must have [been] some [noun] | 30 |
|
| 3 | [pron] must have [been] some [noun sg] | 26 |
|
| 4 | there must have [been] some [noun] | 19 |
|
| 5 | there must have [been] some [noun] | 19 |
|
| 6 | [ex0] must have [been] some [noun] | 19 |
|
| 7 | it must have [been] some [noun] | 12 |
|
| 8 | it must have [been] some [noun] | 12 |
|
| 9 | [pers pn] must have [been] some [noun] | 12 |
|
