| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [not/n't] have been easy | 26 |
|
| 2 | [vb mod] have been easy for | 18 |
|
| 3 | [not/n't] have been easy for | 9 |
|
| 4 | [vb mod] [not/n't] have been for | 6 |
|
