| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | found it [adj] to concentrate [prep] | 7 |
|
| 2 | found it [adj] concentrate [prep] | 7 |
|
| 3 | found it [adj] concentrate [prep] | 7 |
|
| 4 | found it [adj] concentrate on | 5 |
|
| 5 | found it [adj] concentrate on | 5 |
|
