| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have n't been easy | 17 |
|
| 2 | it [verb] n't been easy | 17 |
|
| 3 | it [vb -s] n't been easy | 14 |
|
| 4 | it has n't been easy | 14 |
|
