| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adj] time [pers pn] | 453 |
|
| 2 | at a [adj] time | 380 |
|
| 3 | a [adj] time [pers pn] | 224 |
|
| 4 | at a time [pers pn] | 19 |
|
