| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] concern [prep] [verb] | 47 |
|
| 2 | [adj] concern [is] [verb] | 47 |
|
| 3 | [adj] concern [is] [prep] | 36 |
|
| 4 | [adj] [is] [prep] [verb] | 15 |
|
| 5 | concern [is] [prep] [verb] | 7 |
|
