| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [coord] concentrate on the | 20 |
|
| 2 | [noun sg] and concentrate on the | 19 |
|
| 3 | [noun sg] and concentrate on the | 19 |
|
| 4 | [noun sg] [conj] concentrate on the | 7 |
|
| 5 | [noun sg] [conj] concentrates on the | 6 |
|
| 6 | [noun sg] [conj] concentrated on the | 5 |
|
