| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | concentrate on [verb] [noun] [prep] the | 7 |
|
| 2 | concentrate on [verb] [adv] [prep] the | 7 |
|
| 3 | concentrate on [verb] [noun sg] [prep] the | 5 |
|
| 4 | concentrate on [verb] [adv prt] [prep] the | 5 |
|
| 5 | concentrate on [verb] [prep] the [noun] | 7 |
|
| 6 | concentrate on [verb] [prep] the [adj] | 6 |
|
