| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [verb] at a time [Wh adv] | 21 |
|
| 2 | [pron] [verb] at a time when | 21 |
|
| 3 | [pers pn] [verb] at a time [Wh adv] | 18 |
|
| 4 | [pron] [vb past] at a time [Wh adv] | 12 |
|
| 5 | it [verb] at a time [Wh adv] | 8 |
|
| 6 | it [verb] at a time [Wh adv] | 8 |
|
| 7 | [pron] come at a time [Wh adv] | 5 |
|
| 8 | [pron] [vb -s] at a time [Wh adv] | 5 |
|
