| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | on [noun] ' | 472 |
|
| 2 | on [noun pl] ' | 412 |
|
| 3 | [prep] pupils ' | 173 |
|
| 4 | on pupils [unc] | 20 |
|
| 5 | on pupil ' | 20 |
|
