| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] be to be | 11 |
|
| 2 | it [vb mod] [be] to be | 11 |
|
| 3 | it [vb mod] be to be | 11 |
|
| 4 | it must [be] to be | 5 |
|
