| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] pupils at | 60 |
|
| 2 | of pupils at | 28 |
|
| 3 | of pupils at | 28 |
|
| 4 | for pupils at | 14 |
|
| 5 | for pupils at | 14 |
|
| 6 | with pupils at | 7 |
|
| 7 | with pupils at | 7 |
|
| 8 | to pupils at | 5 |
|
| 9 | to pupils at | 5 |
|
