| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] eight years | 300 |
|
| 2 | [adv prt] [prep] eight | 264 |
|
| 3 | [adv prt] [prep] years | 149 |
|
| 4 | [adv prt] eight years | 6 |
|
