| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [modal v] be on | 78 |
|
| 2 | they must be [prep] | 51 |
|
| 3 | they must be [prep] | 51 |
|
| 4 | [pron] must be on | 41 |
|
| 5 | [pers pn] must be on | 37 |
|
| 6 | they must [be] on | 6 |
|
| 7 | they must be on | 6 |
|
| 8 | they must [be] on | 6 |
|
| 9 | they must be on | 6 |
|
| 10 | they must be on | 6 |
|
