| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] eight years ' [noun] | 9 |
|
| 2 | [prep] eight years ' [noun] | 9 |
|
| 3 | eight years ' [noun] [prep] | 5 |
|
| 4 | eight years ' [noun] [prep] | 5 |
|
