| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] must [verb] been | 1553 |
|
| 2 | [pers pn] [verb] been for | 193 |
|
| 3 | [pers pn] must [verb] for | 176 |
|
| 4 | must [verb] been for | 14 |
|
