| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [adv] for a | 817 |
|
| 2 | [adv] for a time | 90 |
|
| 3 | [vb past] for a time | 52 |
|
| 4 | [vb past] [adv] a time | 6 |
|
