| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] concentrate on this | 6 |
|
| 2 | be concentrate on this | 6 |
|
| 3 | [verb] concentrate on this | 6 |
|
| 4 | [noun] concentrate on this | 5 |
|
| 5 | concentrate [adv] on this | 5 |
|
| 6 | concentrate [adv] on this | 5 |
|
| 7 | concentrate on [verb] this | 6 |
|
| 8 | concentrate on [v-ing] this | 6 |
|
| 9 | concentrate on this [noun] | 19 |
|
| 10 | concentrate on this [noun sg] | 19 |
|
| 11 | concentrate on this [adj] | 5 |
|
