| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be concerned [prep] [adj] [noun] | 11 |
|
| 2 | [modal v] be concerned [prep] [adj] [noun] | 11 |
|
| 3 | [modal v] be concerned [prep] [adj] [noun] | 10 |
|
| 4 | [modal v] be concerned with [adj] [noun] | 8 |
|
| 5 | [modal v] be concerned [prep] [adj] [noun sg] | 6 |
|
| 6 | [modal v] be concerned [prep] [adj] [noun pl] | 5 |
|
