| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] concerned is [conj] | 7 |
|
| 2 | be concerned is [conj] | 7 |
|
| 3 | [is] concerned is [conj] | 6 |
|
| 4 | is concerned is [conj] | 5 |
|
| 5 | concerned about is [conj] | 6 |
|
| 6 | concerned [prep] is [conj] | 6 |
|
| 7 | concerned about is [conj] | 6 |
|
| 8 | concerned [prep] is [conj] | 6 |
|
