| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] years ' time | 170 |
|
| 2 | [adv] [prep] [num] years ' | 20 |
|
| 3 | [adv] [prep] [num] years time | 11 |
|
| 4 | [adv] [num] years ' time | 10 |
|
