| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of [num] years of [noun sg] | 55 |
|
| 2 | of [num] years of age | 14 |
|
| 3 | of [num] years of age | 14 |
|
| 4 | of [num] years of research | 6 |
|
| 5 | of [num] years of research | 6 |
|
| 6 | of two years of [noun] | 5 |
|
