| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] to be concerned [prep] | 14 |
|
| 2 | [vb -s] to [be] concerned [prep] | 14 |
|
| 3 | [vb -s] to be concerned [prep] | 14 |
|
| 4 | [vb -s] to [be] concerned with | 10 |
|
