| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] have been [adj] | 5442 |
|
| 2 | [pers pn] must have been | 1552 |
|
| 3 | must have been [adj] | 760 |
|
| 4 | [pers pn] must have [adj] | 216 |
|
