| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] must have been | 1552 |
|
| 2 | [pers pn] must have been | 1514 |
|
| 3 | it must have been | 781 |
|
| 4 | he must have been | 263 |
|
| 5 | she must have been | 139 |
|
| 6 | they must have been | 123 |
|
| 7 | i must have been | 117 |
|
| 8 | you must have been | 93 |
|
| 9 | [pers pn] must 've been | 38 |
|
| 10 | we must have been | 16 |
|
| 11 | them must have been | 9 |
|
