| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | concentrate on this | 30 |
|
| 2 | concentrate on this | 30 |
|
| 3 | to concentrate on this | 8 |
|
| 4 | concentrated on this | 7 |
|
| 5 | concentrating on this | 6 |
|
| 6 | concentrate on this | 5 |
|
