| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] [prep] a [det] years | 25 |
|
| 2 | [prep] [noun] [prep] a few years | 25 |
|
| 3 | [prep] [noun sg] [prep] a [det] years | 15 |
|
| 4 | [prep] [noun] for a [det] years | 13 |
|
| 5 | at [noun] [prep] a [det] years | 7 |
|
| 6 | [prep] [noun pl] [prep] a [det] years | 6 |
|
| 7 | [prep] [noun] in a [det] years | 5 |
|
| 8 | of [noun] [prep] a [det] years | 5 |
|
