| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been concerned [prep] | 205 |
|
| 2 | been concerned with | 140 |
|
| 3 | been concerned with | 140 |
|
| 4 | been concerned about | 34 |
|
| 5 | been concerned about | 34 |
|
| 6 | been concerned for | 10 |
|
| 7 | been concerned for | 10 |
|
| 8 | been concerned in | 7 |
|
| 9 | been concerned in | 7 |
|
