| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a few minutes [prep] a | 21 |
|
| 2 | a few minutes [prep] a | 21 |
|
| 3 | a few minutes [prep] a | 20 |
|
| 4 | a few minutes at a | 7 |
|
| 5 | a few minutes at a | 7 |
|
