| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be open to [noun sg] | 22 |
|
| 2 | it [is] open to [noun sg] | 16 |
|
| 3 | it is open to [noun sg] | 14 |
|
| 4 | it [was/were] open to [noun sg] | 6 |
|
| 5 | it [be] open to question | 6 |
|
| 6 | it was open to [noun sg] | 5 |
|
