| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | force [pn reflx] to concentrate on | 10 |
|
| 2 | [verb] [pn reflx] to concentrate on | 10 |
|
| 3 | [vb past] [pn reflx] to concentrate on | 7 |
|
| 4 | forced [pn reflx] to concentrate on | 7 |
|
| 5 | [pn reflx] to concentrate on the | 5 |
|
| 6 | [pn reflx] to concentrate on [art] | 5 |
|
| 7 | [pn reflx] to concentrate on the | 5 |
|
| 8 | [pn reflx] to concentrate on [art] | 5 |
|
