| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] on [art] [adj] [noun] | 15939 |
|
| 2 | [to-vb] on [art] [adj] [noun] | 1420 |
|
| 3 | concentrate on [art] [adj] [noun] | 360 |
|
| 4 | to concentrate [prep] [art] [adj] [noun] | 91 |
|
| 5 | to concentrate on [art] [adj] [noun] | 81 |
|
