| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] still be [prep] | 173 |
|
| 2 | must [adv] be [prep] | 118 |
|
| 3 | must still be [prep] | 12 |
|
| 4 | must still [be] [prep] | 12 |
|
| 5 | must still be [prep] | 12 |
|
| 6 | must still [be] [prep] | 12 |
|
