| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did [vb infin] a certain [noun] | 8 |
|
| 2 | did [vb infin] [art] certain [noun] | 8 |
|
| 3 | did [vb infin] [art] certain [noun] | 8 |
|
| 4 | did [vb infin] a certain [noun] | 8 |
|
