| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [modal v] be | 57 |
|
| 2 | [be] must be | 18 |
|
| 3 | be must be | 17 |
|
| 4 | [is] must be | 15 |
|
| 5 | is must [be] | 8 |
|
| 6 | is must be | 8 |
|
| 7 | is must [be] | 8 |
|
