| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be concerned with [det] [noun pl] | 20 |
|
| 2 | be concerned with [det] [noun pl] | 20 |
|
| 3 | be concerned with such [noun pl] | 11 |
|
| 4 | are concerned with [det] [noun pl] | 6 |
|
| 5 | is concerned with [det] [noun pl] | 5 |
|
