| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] teachers ' union | 18 |
|
| 2 | [prep] the teachers ' union | 17 |
|
| 3 | [prep] [art] teachers ' unions | 10 |
|
| 4 | [prep] [art] teachers ' union | 8 |
|
| 5 | of [art] teachers ' union | 5 |
|
| 6 | of [art] teachers ' union | 5 |
|
