| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [adv] [prep] a certain time | 7 |
|
| 2 | [be] [adv] [prep] a certain time | 7 |
|
| 3 | be [adv] [prep] a certain time | 7 |
|
| 4 | be [adv] [prep] a certain time | 7 |
|
