| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | in the three years [prep] | 21 |
|
| 2 | in the three years between | 5 |
|
| 3 | in the three years after | 5 |
|
| 4 | in the three years of | 5 |
|
| 5 | in the three years of | 5 |
|
| 6 | in the three years between | 5 |
|
| 7 | in the three years after | 5 |
|
