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