| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [prep] [noun sg] | 2301 |
|
| 2 | [verb] been concerned [prep] | 159 |
|
| 3 | [verb] concerned [prep] [noun sg] | 11 |
|
| 4 | been concerned [prep] [noun sg] | 11 |
|
