| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] prison officers ' association | 6 |
|
| 2 | [prep] [art] prison [noun pl] ' association | 6 |
|
| 3 | [prep] the prison [noun pl] ' association | 6 |
|
| 4 | [prep] the prison [noun pl] ' association | 6 |
|
| 5 | [prep] [art] prison [noun pl] ' association | 6 |
|
