| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [verb] been [adj] | 761 |
|
| 2 | they [verb] been [adj] | 590 |
|
| 3 | they must [verb] [adj] | 147 |
|
| 4 | they must [verb] been | 132 |
|
