| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a few years and | 22 |
|
| 2 | [prep] a [det] years and | 22 |
|
| 3 | [prep] a [det] years and | 22 |
|
| 4 | for a [det] years and | 15 |
|
| 5 | for a [det] years and | 15 |
|
