| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it is [not/n't] uncommon for | 12 |
|
| 2 | [conj] it is not uncommon for | 12 |
|
| 3 | [coord] it is [not/n't] uncommon for | 8 |
|
| 4 | and it is [not/n't] uncommon for | 7 |
|
| 5 | and it is [not/n't] uncommon for | 7 |
|
