| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [prep] eight years | 31 |
|
| 2 | seven [prep] [adj] years | 17 |
|
| 3 | seven [prep] [num] years | 17 |
|
| 4 | seven [prep] eight [noun] | 10 |
|
| 5 | seven [prep] eight [noun pl] | 9 |
|
| 6 | seven [prep] eight year | 5 |
|
| 7 | seven [prep] eight years | 5 |
|
