| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] years [prep] | 113 |
|
| 2 | [prep] a [adj] two years | 32 |
|
| 3 | a [adj] two years [prep] | 14 |
|
| 4 | [prep] [adj] two years [prep] | 12 |
|
