| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is not [adj] for | 350 |
|
| 2 | it [be] not unusual for | 93 |
|
| 3 | it be not unusual for | 93 |
|
| 4 | it is [adv] unusual for | 58 |
|
| 5 | it [is] not unusual for | 58 |
|
| 6 | it is not unusual [prep] | 53 |
|
| 7 | [pers pn] is not unusual for | 49 |
|
| 8 | it is [not/n't] unusual for | 49 |
|
| 9 | [pron] is not unusual for | 49 |
|
| 10 | it is not unusual for | 49 |
|
| 11 | it is not unusual for | 49 |
|
