| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [adj] time | 380 |
|
| 2 | [adv prt] at a [adj] | 273 |
|
| 3 | [adv prt] at [adj] time | 202 |
|
| 4 | [adv prt] a [adj] time | 82 |
|
| 5 | [adv prt] at a time | 33 |
|
