| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it be [adv] unusual for | 16 |
|
| 2 | [coord] it be [not/n't] unusual for | 14 |
|
| 3 | [coord] it be not unusual for | 14 |
|
| 4 | [coord] it be not unusual for | 14 |
|
