| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it at a time | 6 |
|
| 2 | it [verb] at a time | 11 |
|
| 3 | it be at a time | 7 |
|
| 4 | it [was/were] at a time | 7 |
|
| 5 | it was at a time | 7 |
|
| 6 | it come at a time | 7 |
|
| 7 | it [be] at a time | 7 |
|
| 8 | it [vb past] at a time | 6 |
|
| 9 | it [vb -s] at a time | 5 |
|
| 10 | it at a time [adv] | 6 |
|
| 11 | it at a time [Wh adv] | 5 |
|
| 12 | it at a time when | 5 |
|
| 13 | it at a time when | 5 |
|
