| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a time [prep] | 476 |
|
| 2 | at a time [prep] | 476 |
|
| 3 | at a [noun sg] for | 171 |
|
| 4 | at a [noun] for | 171 |
|
| 5 | at [art] time for | 26 |
|
| 6 | [prep] a time for | 20 |
|
| 7 | [prep] a time for | 20 |
|
| 8 | at a time for | 12 |
|
| 9 | at a time for | 12 |
|
| 10 | at a time for | 12 |
|
