| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be concerned [prep] this [noun] | 20 |
|
| 2 | [be] concerned [prep] this [noun] | 20 |
|
| 3 | [be] concerned [prep] this [noun sg] | 20 |
|
| 4 | [be] concerned [prep] this [noun] | 20 |
|
| 5 | [am/are] concerned [prep] this [noun] | 8 |
|
| 6 | been concerned [prep] this [noun] | 6 |
|
| 7 | [be] concerned with this [noun] | 6 |
|
| 8 | are concerned [prep] this [noun] | 6 |
|
| 9 | [been] concerned [prep] this [noun] | 6 |
|
| 10 | [be] concerned about this [noun] | 5 |
|
| 11 | [be] concerned in this [noun] | 5 |
|
