| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [be] [prep] this [noun] | 135 |
|
| 2 | [verb] [be] concerned [prep] [noun] | 20 |
|
| 3 | [be] concerned [prep] this [noun] | 20 |
|
| 4 | [verb] [be] concerned [prep] this | 7 |
|
