| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] or [adj] years time | 15 |
|
| 2 | [prep] [num] [coord] [adj] years time | 15 |
|
| 3 | [prep] [num] or [adj] years time | 15 |
|
| 4 | [prep] [num] [conj] [adj] years time | 15 |
|
