| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [art] time [Wh adv] | 1608 |
|
| 2 | at [art] time [Wh adv] | 1608 |
|
| 3 | at a [noun sg] [Wh adv] | 1497 |
|
| 4 | at a [noun] [Wh adv] | 1497 |
|
| 5 | [prep] a time [Wh adv] | 1447 |
|
| 6 | [prep] a time [Wh adv] | 1447 |
|
| 7 | at a time [adv] | 1379 |
|
| 8 | at a time [Wh adv] | 1344 |
|
| 9 | at a time [Wh adv] | 1344 |
|
| 10 | at a time [Wh adv] | 1344 |
|
