| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are concerned [prep] [noun sg] [noun] | 20 |
|
| 2 | are concerned with [noun] [noun] | 14 |
|
| 3 | are concerned [prep] [noun] [noun pl] | 11 |
|
| 4 | are concerned [prep] [noun] [noun sg] | 10 |
|
| 5 | are concerned about [noun] [noun] | 6 |
|
