| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] on [adj] [noun pl] | 7533 |
|
| 2 | [to-vb] on [adj] [noun pl] | 748 |
|
| 3 | concentrate on [adj] [noun pl] | 266 |
|
| 4 | to concentrate on [adj] [noun] | 115 |
|
| 5 | to concentrate [prep] [adj] [noun pl] | 69 |
|
