| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] on [noun pl] 's | 59 |
|
| 2 | concentrate on [noun] 's | 25 |
|
| 3 | concentrate on [noun pl] [unc] | 10 |
|
| 4 | concentrate [prep] [noun pl] 's | 6 |
|
