| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for [adv] 30 years | 70 |
|
| 2 | for over 30 years | 43 |
|
| 3 | for over 30 years | 43 |
|
| 4 | for nearly 30 years | 16 |
|
| 5 | for nearly 30 years | 16 |
|
| 6 | for almost 30 years | 6 |
|
| 7 | for almost 30 years | 6 |
|
