| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb -s] a certain [noun] | 42 |
|
| 2 | it [vb -s] a certain [noun sg] | 41 |
|
| 3 | it has a certain [noun] | 14 |
|
| 4 | it [vb -s] a certain amount | 7 |
|
| 5 | it [vb -s] a certain amount | 7 |
|
| 6 | it takes a certain [noun] | 6 |
|
