| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been common [noun sg] | 18 |
|
| 2 | been common practice | 7 |
|
| 3 | been common practice | 7 |
|
| 4 | been common knowledge | 5 |
|
| 5 | been common knowledge | 5 |
|
