| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] be [pron] to do | 18 |
|
| 2 | it [vb mod] be [indef pn] to do | 18 |
|
| 3 | it [vb mod] be something to do | 17 |
|
| 4 | it [vb mod] be something to do | 17 |
|
| 5 | it must be [pron] to do | 7 |
|
