| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [be] concerned [prep] | 65 |
|
| 2 | [vb base] be concerned [prep] | 65 |
|
| 3 | [vb base] [be] concerned [prep] | 65 |
|
| 4 | [vb base] [been] concerned [prep] | 60 |
|
| 5 | [vb base] been concerned [prep] | 60 |
|
| 6 | have [be] concerned [prep] | 58 |
|
| 7 | [vb base] [be] concerned with | 45 |
|
| 8 | [vb base] [be] concerned with | 45 |
|
| 9 | [vb base] [be] concerned about | 11 |
|
| 10 | [vb base] [be] concerned about | 11 |
|
