| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be concerned i [vb mod] | 11 |
|
| 2 | [be] concerned i [vb mod] | 11 |
|
| 3 | [am/are] concerned i [vb mod] | 9 |
|
| 4 | concerned i [vb mod] [vb infin] | 9 |
|
| 5 | concerned i [vb mod] [verb] | 9 |
|
