| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at least for [art] time | 53 |
|
| 2 | at [adv] for [art] time | 53 |
|
| 3 | at least for [art] time | 53 |
|
| 4 | at [adv] for the time | 38 |
|
| 5 | at [adv] for a time | 15 |
|
