| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] time [pers pn] | 157 |
|
| 2 | [prep] a certain [noun sg] [pers pn] | 73 |
|
| 3 | [prep] a certain [noun] [pers pn] | 73 |
|
| 4 | [prep] a certain time [pron] | 9 |
|
| 5 | [prep] a certain time [pers pn] | 5 |
|
| 6 | [prep] a certain time [pers pn] | 5 |
|
| 7 | [prep] [art] certain time [pers pn] | 5 |
|
| 8 | [prep] [art] certain time [pers pn] | 5 |
|
| 9 | [prep] a certain time [pers pn] | 5 |
|
