| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | concern [was/were] [prep] the | 22 |
|
| 2 | concern was [prep] the | 22 |
|
| 3 | concern [was/were] with the | 13 |
|
| 4 | concern [was/were] with the | 13 |
|
| 5 | concern [was/were] for the | 7 |
|
| 6 | concern [was/were] for the | 7 |
|
