| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] been [adj] | 1263 |
|
| 2 | it must [verb] been | 781 |
|
| 3 | must [verb] been [adj] | 761 |
|
| 4 | it must [verb] [adj] | 121 |
|
