| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if it [verb] not been | 252 |
|
| 2 | it [verb] not been [prep] | 211 |
|
| 3 | if it [verb] been [prep] | 16 |
|
| 4 | if it [verb] not [prep] | 9 |
|
