| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] be some concern | 8 |
|
| 2 | have [be] some concern | 8 |
|
| 3 | [verb] been some concern | 8 |
|
| 4 | [verb] [been] some concern | 8 |
|
| 5 | [vb -s] [be] some concern | 6 |
|
| 6 | has [be] some concern | 5 |
|
