| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] not unusual for [adj] | 23 |
|
| 2 | [be] not unusual for a | 20 |
|
| 3 | not unusual for a [adj] | 11 |
|
| 4 | [be] not for a [adj] | 9 |
|
| 5 | [be] unusual for a [adj] | 8 |
|
