| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun sg] [prep] pupils ' | 11 |
|
| 2 | a [noun sg] of pupils ' | 9 |
|
| 3 | a [noun sg] of pupils ' | 9 |
|
| 4 | a [noun sg] [prep] pupils ' | 8 |
|
