| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj -er] two years | 26 |
|
| 2 | [prep] a further two year | 26 |
|
| 3 | [prep] a [adj -er] two year | 26 |
|
| 4 | for a [adj -er] two year | 18 |
|
| 5 | for a [adj -er] two year | 18 |
|
