| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [adv] been | 587 |
|
| 2 | it [vb past] been possible | 21 |
|
| 3 | it [vb past] [adv] possible | 11 |
|
| 4 | [vb past] [adv] been possible | 9 |
|
