| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] the students ' association | 15 |
|
| 2 | [prep] the students ['s] association | 15 |
|
| 3 | by the students ['s] association | 7 |
|
| 4 | by the students ['s] association | 7 |
|
