| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] unusual for [art] [adj] [noun sg] | 13 |
|
| 2 | not unusual for [art] [adj] [noun sg] | 13 |
|
| 3 | [not/n't] unusual for [art] [adj] [noun sg] | 13 |
|
| 4 | [not/n't] unusual for a [adj] [noun sg] | 11 |
|
