| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [prep] a time | 132 |
|
| 2 | [adj] at a time | 74 |
|
| 3 | [adj] at a time | 74 |
|
| 4 | [adj] for a time | 45 |
|
| 5 | [adj] for a time | 45 |
|
| 6 | important [prep] a time | 5 |
|
