| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] at [adj] time | 607 |
|
| 2 | at a [adj] time | 433 |
|
| 3 | [conj] at a [adj] | 386 |
|
| 4 | [conj] a [adj] time | 101 |
|
| 5 | [conj] at a time | 73 |
|
