| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been concerned for some [noun sg] | 5 |
|
| 2 | [verb] been concerned for some [noun sg] | 5 |
|
| 3 | [verb] been concerned for [det] [noun sg] | 5 |
|
| 4 | have been concerned for [adj] [noun sg] | 5 |
|
| 5 | [verb] been concerned for [adj] time | 5 |
|
