| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must [verb] be [prep] | 181 |
|
| 2 | [pers pn] must [verb] be [prep] | 155 |
|
| 3 | they [modal v] [verb] be [prep] | 84 |
|
| 4 | they must [verb] be [prep] | 11 |
|
| 5 | they must [verb] [be] [prep] | 9 |
|
