| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] a certain [noun sg] of | 30 |
|
| 2 | [subord] [art] certain [noun sg] of | 30 |
|
| 3 | [subord] a certain [noun sg] of | 30 |
|
| 4 | [subord] [art] certain amount of | 15 |
|
| 5 | than [art] certain [noun sg] of | 7 |
|
| 6 | [subord] [art] certain number of | 7 |
|
| 7 | when [art] certain [noun sg] of | 5 |
|
