| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was [prep] [adj] [noun] | 4359 |
|
| 2 | concerned [prep] [adj] [noun] | 765 |
|
| 3 | was concerned [prep] [noun] | 58 |
|
| 4 | was concerned [prep] [adj] | 46 |
|
