| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] [num] years | 151 |
|
| 2 | [prep] [adj] [num] years [coord] | 61 |
|
| 3 | [prep] a [adj] [num] [coord] | 52 |
|
| 4 | [prep] a [adj] years [coord] | 49 |
|
| 5 | [prep] a [num] years [coord] | 22 |
|
| 6 | a [adj] [num] years [coord] | 12 |
|
