| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] at a [adj] | 508 |
|
| 2 | at a [adj] time | 433 |
|
| 3 | [adv] a [adj] time | 404 |
|
| 4 | [adv] at [adj] time | 323 |
|
| 5 | [adv] at a time | 116 |
|
