| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] 15 per [unc] | 155 |
|
| 2 | of 15 per [unc] | 62 |
|
| 3 | of [adv] 15 [unc] | 10 |
|
| 4 | of [adv] 15 per | 10 |
|
