| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [prep] [verb] on the | 419 |
|
| 2 | [noun sg] [prep] concentrate on [art] | 26 |
|
| 3 | [noun sg] [prep] concentrate on [art] | 26 |
|
| 4 | [noun] [prep] concentrate on the | 26 |
|
| 5 | [noun sg] [prep] concentrate on the | 21 |
|
| 6 | [noun sg] [prep] concentrate [prep] the | 21 |
|
| 7 | [noun sg] [prep] concentrate [prep] the | 21 |
|
| 8 | [noun sg] [prep] concentrate on the | 21 |
|
