| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb -s] a [noun] | 2506 |
|
| 2 | [vb -s] a certain [noun] | 246 |
|
| 3 | it [vb -s] a certain | 44 |
|
| 4 | it [vb -s] certain [noun] | 18 |
|
| 5 | it a certain [noun] | 10 |
|
