| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must [verb] been | 1981 |
|
| 2 | he [vb mod] [verb] been | 1282 |
|
| 3 | he [modal v] [verb] been | 1282 |
|
| 4 | he must [verb] be | 273 |
|
| 5 | he must [verb] [be] | 273 |
|
| 6 | he must [verb] [been] | 266 |
|
| 7 | he must [verb] been | 266 |
|
