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