| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] for 30 years | 81 |
|
| 2 | for [adv] 30 years | 70 |
|
| 3 | [noun] for [adv] 30 | 57 |
|
| 4 | [noun] [adv] 30 years | 18 |
|
