| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [vb pp] a [noun] | 510 |
|
| 2 | [to-vb] a certain [noun] | 205 |
|
| 3 | [vb pp] a certain [noun] | 154 |
|
| 4 | [to-vb] [vb pp] a certain | 7 |
|
