| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 's [modal v] be | 80 |
|
| 2 | 's [vb mod] be | 80 |
|
| 3 | [be] must be | 18 |
|
| 4 | be must be | 17 |
|
| 5 | [is] must be | 15 |
|
| 6 | 's must be | 6 |
|
| 7 | 's must [be] | 6 |
|
| 8 | 's must [be] | 6 |
|
| 9 | 's must be | 6 |
|
