| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [prep] a few minutes | 20 |
|
| 2 | [vb base] [prep] a few minutes | 20 |
|
| 3 | [vb base] [prep] a few minutes | 20 |
|
| 4 | [vb base] for a few minutes | 17 |
|
| 5 | [vb base] for a few minutes | 17 |
|
