| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] at [art] time | 204 |
|
| 2 | [prep] [pron] at a [noun] | 97 |
|
| 3 | [prep] [pron] at a [noun sg] | 93 |
|
| 4 | [prep] [pron] [prep] a time | 45 |
|
| 5 | [prep] [pron] [prep] a time | 45 |
|
| 6 | [prep] [pron] at a time | 30 |
|
| 7 | [prep] [pron] at a time | 30 |
|
| 8 | [prep] [pron] at a time | 30 |
|
