| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it had been [adj] for | 44 |
|
| 2 | it have been possible for | 15 |
|
| 3 | it [verb] been possible for | 15 |
|
| 4 | it had be possible for | 5 |
|
| 5 | [pron] had been possible for | 5 |
|
| 6 | it had [be] possible for | 5 |
|
| 7 | it had been possible for | 5 |
|
| 8 | it had [been] possible for | 5 |
|
| 9 | it [vb past] been possible for | 5 |
|
| 10 | it had been possible [prep] | 5 |
|
| 11 | it had been possible [prep] | 5 |
|
