| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of three years ' [noun] [prep] | 7 |
|
| 2 | of three years ['s] [noun] [prep] | 7 |
|
| 3 | of three years ' [noun] [prep] | 7 |
|
| 4 | of three years [unc] [noun sg] [prep] | 6 |
|
