| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [to-vb] [vb pp] a certain | 5 |
|
| 2 | [to-vb] [vb pp] a certain [noun] | 7 |
|
| 3 | [to-vb] [vb pp] a certain [noun sg] | 7 |
|
