| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was concerned [prep] the [noun sg] | 87 |
|
| 2 | was concerned with the [noun] | 52 |
|
| 3 | was concerned about the [noun] | 28 |
|
| 4 | was concerned [prep] the [noun pl] | 12 |
|
| 5 | was concerned for the [noun] | 8 |
|
| 6 | was concerned at the [noun] | 6 |
|
| 7 | was concerned [prep] the safety | 5 |
|
| 8 | was concerned [prep] the safety | 5 |
|
