| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] concern over | 184 |
|
| 2 | grave concern [prep] | 36 |
|
| 3 | grave concern [prep] | 36 |
|
| 4 | grave [noun] over | 6 |
|
| 5 | grave concern over | 5 |
|
