| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] open to | 184 |
|
| 2 | it [be] open to | 138 |
|
| 3 | it [vb mod] [be] to | 91 |
|
| 4 | it [vb mod] [be] open | 45 |
|
