| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [is] [verb] at a time | 11 |
|
| 2 | [noun sg] [is] [verb] at a time | 11 |
|
| 3 | [is] [verb] at a time [adv] | 6 |
|
| 4 | [is] [verb] at a time [Wh adv] | 6 |
|
| 5 | [is] [verb] at a time when | 6 |
|
| 6 | [is] [verb] at a time when | 6 |
|
