| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | on [noun] ' | 472 |
|
| 2 | on [noun pl] ' | 412 |
|
| 3 | [prep] teachers ' | 227 |
|
| 4 | on teachers [unc] | 24 |
|
| 5 | on teacher ' | 24 |
|
