| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] years [coord] | 49 |
|
| 2 | [prep] [adj] years [coord] then | 28 |
|
| 3 | [prep] a [adj] [coord] then | 10 |
|
| 4 | a [adj] years [coord] then | 9 |
|
