| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [noun] on the | 7880 |
|
| 2 | [noun] concentrate on the | 216 |
|
| 3 | [noun sg] concentrate on the | 137 |
|
| 4 | [noun sg] [noun] concentrate on | 83 |
|
