| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | concern have be [vb pp] over the | 8 |
|
| 2 | concern have been [vb pp] over the | 8 |
|
| 3 | concern has be [vb pp] over the | 8 |
|
| 4 | concern have be expressed over the | 7 |
|
