| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [noun] [prep] a few years | 9 |
|
| 2 | [noun prp] [noun] [prep] a [det] years | 9 |
|
| 3 | [noun prp] [noun] for a [det] years | 6 |
|
| 4 | [noun prp] [noun sg] [prep] a [det] years | 5 |
|
