| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [noun] [verb] at a time | 8 |
|
| 2 | [det] [noun sg] [verb] at a time | 6 |
|
| 3 | [det] [be] [verb] at a time | 5 |
|
| 4 | [det] be [verb] at a time | 5 |
|
| 5 | [det] [verb] at a time when | 12 |
|
| 6 | [det] [verb] at a time [Wh adv] | 12 |
|
| 7 | [det] [verb] at a time when | 12 |
|
| 8 | [det] [verb] at a time [adv] | 12 |
|
