| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] 15 per | 28 |
|
| 2 | [prep] a 15 per | 20 |
|
| 3 | of [art] 15 per | 8 |
|
| 4 | [prep] the 15 per | 8 |
|
| 5 | of [art] 15 per | 8 |
|
| 6 | with [art] 15 per | 6 |
|
| 7 | with [art] 15 per | 6 |
|
