| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] be concerned | 3991 |
|
| 2 | [noun] [be] concerned | 3991 |
|
| 3 | [noun] been [adj] | 295 |
|
| 4 | [noun] been [adj] | 249 |
|
| 5 | [noun] [been] concerned | 7 |
|
| 6 | [noun] been concerned | 7 |
|
