| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] effective if [art] | 14 |
|
| 2 | [adv] effective if [art] | 14 |
|
| 3 | more effective if [art] | 10 |
|
| 4 | more effective if [art] | 10 |
|
| 5 | effective if [art] [noun] | 15 |
|
| 6 | effective if [art] [noun sg] | 14 |
|
