| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [num] | 3589 |
|
| 2 | [noun] [prep] a year | 783 |
|
| 3 | [noun] [prep] [num] year | 544 |
|
| 4 | [prep] a [num] year | 491 |
|
| 5 | [noun] a [num] year | 17 |
|
