| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [adj] [be] | 9 |
|
| 2 | must be [adj] [be] | 9 |
|
| 3 | must be [adj] [be] | 9 |
|
| 4 | must be [adj] be | 8 |
|
| 5 | must be [adj] [is] | 6 |
|
| 6 | must be [adj] is | 5 |
|
