| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] have been [pron] [prep] | 19 |
|
| 2 | [pron] must have been [pron] [prep] | 18 |
|
| 3 | [pers pn] must have been [pron] [prep] | 11 |
|
| 4 | it must have [be] [pron] [prep] | 10 |
|
| 5 | it must have [been] [pron] [prep] | 10 |
|
| 6 | it must [verb] been [pron] [prep] | 10 |
|
| 7 | it must have be [pron] [prep] | 10 |
|
| 8 | it must have been [pron] [prep] | 10 |
|
| 9 | it must have been [pron] [prep] | 10 |
|
