| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a certain [noun] of time | 35 |
|
| 2 | [prep] [art] certain [noun] of time | 35 |
|
| 3 | [prep] a certain [noun] of time | 35 |
|
| 4 | [prep] [art] certain [noun] of time | 35 |
|
| 5 | [prep] [art] certain [noun] of time | 35 |
|
| 6 | [prep] [art] certain [noun] of time | 35 |
|
| 7 | [prep] [art] certain [noun sg] of time | 35 |
|
| 8 | for [art] certain [noun] of time | 23 |
|
| 9 | for [art] certain [noun] of time | 23 |
|
| 10 | [prep] [art] certain period of time | 15 |
|
| 11 | [prep] [art] certain period of time | 15 |
|
| 12 | [prep] [art] certain length of time | 10 |
|
| 13 | [prep] [art] certain length of time | 10 |
|
| 14 | [prep] [art] certain amount of time | 9 |
|
| 15 | [prep] [art] certain amount of time | 9 |
|
