| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [det] [noun] | 358 |
|
| 2 | has been [adj] concern | 23 |
|
| 3 | have been [det] concern | 9 |
|
| 4 | [verb] been [det] concern | 9 |
|
| 5 | [vb -s] been [det] concern | 7 |
|
| 6 | has be [det] concern | 6 |
|
| 7 | has [be] [det] concern | 6 |
|
| 8 | has [been] [det] concern | 6 |
|
