| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must continue [prep] be | 17 |
|
| 2 | must continue to [be] | 17 |
|
| 3 | must continue [prep] [be] | 17 |
|
| 4 | must continue [prep] [be] | 17 |
|
| 5 | must continue [prep] be | 17 |
|
