| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] a certain [noun] | 154 |
|
| 2 | [vb pp] do a [noun] | 60 |
|
| 3 | do a certain [noun] | 25 |
|
| 4 | [vb pp] do a certain | 5 |
|
