| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [prep] [det] [noun sg] | 343 |
|
| 2 | [verb] been concerned [prep] [det] | 16 |
|
| 3 | been concerned [prep] [det] [noun sg] | 12 |
|
| 4 | [verb] been concerned [prep] [noun sg] | 7 |
|
