| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [det] years | 170 |
|
| 2 | [pos pn] [noun] [prep] a [det] | 150 |
|
| 3 | [pos pn] [noun] [prep] [det] years | 75 |
|
| 4 | [pos pn] [noun] a [det] years | 12 |
|
