| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [not/n't] for | 512 |
|
| 2 | it [be] [not/n't] unusual | 180 |
|
| 3 | [be] [not/n't] unusual for | 98 |
|
| 4 | it [be] unusual for | 61 |
|
