| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] by [art] teachers ' [noun] | 9 |
|
| 2 | [vb pp] by the teachers ' [noun] | 7 |
|
| 3 | [vb pp] by the teachers ' [noun] | 7 |
|
| 4 | [vb pp] by [art] teachers ' [noun sg] | 6 |
|
