| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | concentrated [prep] [art] few | 14 |
|
| 2 | concentrated [prep] [art] few | 14 |
|
| 3 | concentrated in [art] few | 13 |
|
| 4 | concentrated [prep] a few | 13 |
|
| 5 | concentrated [prep] a few | 13 |
|
| 6 | concentrated in [art] few | 13 |
|
