| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] on the [noun] | 3277 |
|
| 2 | to concentrate on the [noun] | 142 |
|
| 3 | [vb base] to concentrate on the | 32 |
|
| 4 | [vb base] to concentrate on [noun] | 17 |
|
