| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] parents ' association | 9 |
|
| 2 | [prep] [art] parents ' association | 9 |
|
| 3 | of [art] parents ' association | 5 |
|
| 4 | of [art] parents ' association | 5 |
|
