| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] [prep] a [det] [noun] | 293 |
|
| 2 | [prep] [noun] [prep] a [det] [noun pl] | 264 |
|
| 3 | [prep] [noun] [prep] a [adj] years | 39 |
|
| 4 | [prep] [noun] [prep] [art] [det] years | 32 |
|
| 5 | [prep] [noun] [prep] a [det] year | 26 |
|
| 6 | [prep] [noun] [prep] a [det] years | 25 |
|
