| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] year 's [noun] | 57 |
|
| 2 | [prep] [adv] [num] year [noun] | 49 |
|
| 3 | [adv] [num] year 's [noun] | 14 |
|
| 4 | [prep] [adv] [num] year 's | 8 |
|
