| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] the three years | 137 |
|
| 2 | [prep] the three years | 137 |
|
| 3 | in the three years | 55 |
|
| 4 | over the three years | 22 |
|
| 5 | during the three years | 16 |
|
| 6 | of the three years | 15 |
|
| 7 | for the three years | 14 |
|
