| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun sg] [verb] on the | 652 |
|
| 2 | [prep] [noun] concentrate on the | 16 |
|
| 3 | [prep] [noun sg] concentrate [prep] the | 13 |
|
| 4 | [prep] [noun sg] concentrate [prep] the | 13 |
|
| 5 | [prep] [noun sg] concentrate on [art] | 11 |
|
| 6 | [prep] [noun sg] concentrate on the | 11 |
|
| 7 | [prep] [noun sg] concentrate on the | 11 |
|
| 8 | [prep] [noun sg] concentrate on the | 11 |
|
| 9 | [prep] [noun sg] concentrate on [art] | 11 |
|
