| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [modal v] have been in | 250 |
|
| 2 | [pron] must have been [prep] | 180 |
|
| 3 | [pron] must have been [prep] | 180 |
|
| 4 | [pron] must have [been] in | 51 |
|
| 5 | [pron] must have [be] in | 51 |
|
| 6 | [pron] must have be in | 51 |
|
| 7 | [pron] must [verb] been in | 51 |
|
| 8 | [pron] must have been in | 51 |
|
