| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] five years ' [noun] | 75 |
|
| 2 | [noun] [prep] five years ' | 36 |
|
| 3 | [noun] [prep] years ' [noun] | 18 |
|
| 4 | [noun] [prep] five years [noun] | 12 |
|
