| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] concentrate [adv] upon [art] | 7 |
|
| 2 | [noun sg] concentrate [adv] upon [art] | 6 |
|
| 3 | concentrate [adv] upon [art] [noun] | 8 |
|
| 4 | concentrate [adv] upon [art] [noun sg] | 6 |
|
