| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] twenty five years | 20 |
|
| 2 | [adv] twenty five years | 20 |
|
| 3 | [adv] twenty five years | 20 |
|
| 4 | over twenty five years | 5 |
|
| 5 | over twenty five years | 5 |
|
| 6 | about twenty five years | 5 |
|
| 7 | about twenty five years | 5 |
|
