| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adv] [num] year 's [noun] | 8 |
|
| 2 | [prep] [adv] [num] year 's [noun] | 8 |
|
| 3 | [prep] [adv] [num] year 's [noun sg] | 8 |
|
| 4 | at [adv] [num] year 's [noun] | 6 |
|
| 5 | [prep] least [num] year 's [noun] | 6 |
|
| 6 | [prep] least [num] year 's [noun] | 6 |
|
| 7 | [prep] [adv] one year 's [noun] | 6 |
|
