| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [noun sg] concentrate on the | 12 |
|
| 2 | [noun sg] [noun pl] concentrate on the | 10 |
|
| 3 | [noun sg] [noun] concentrates on the | 7 |
|
| 4 | [noun sg] [noun] concentrate on the | 5 |
|
| 5 | [noun sg] [noun] concentrated on the | 5 |
|
