| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] at [art] time | 630 |
|
| 2 | [pron] at a [noun] | 532 |
|
| 3 | [pron] at a [noun sg] | 514 |
|
| 4 | [pron] [prep] a time | 270 |
|
| 5 | [pron] [prep] a time | 270 |
|
| 6 | [pron] at a time | 218 |
|
| 7 | [pron] at a time | 218 |
|
