| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [prep] | 1101 |
|
| 2 | must be [prep] | 1101 |
|
| 3 | [modal v] be as | 70 |
|
| 4 | must [be] as | 5 |
|
| 5 | must [be] as | 5 |
|
| 6 | must be as | 5 |
|
| 7 | must be as | 5 |
|
