| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] years [prep] | 4119 |
|
| 2 | [prep] a [adj] [prep] | 1143 |
|
| 3 | [prep] a [adj] years | 820 |
|
| 4 | a [adj] years [prep] | 353 |
|
