| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] at a time [Wh adv] | 16 |
|
| 2 | [pers pn] at a time when | 16 |
|
| 3 | [pers pn] at a time [Wh adv] | 16 |
|
| 4 | it at a time [Wh adv] | 5 |
|
| 5 | them at a time [Wh adv] | 5 |
|
