| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be not uncommon for [adj] | 8 |
|
| 2 | [be] not uncommon for [adj] | 8 |
|
| 3 | was not uncommon for [adj] | 6 |
|
| 4 | [was/were] not uncommon for [adj] | 6 |
|
| 5 | not uncommon for [adj] [noun pl] | 9 |
|
| 6 | not uncommon for [adj] [noun] | 9 |
|
