| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | years of [noun] [noun] | 341 |
|
| 2 | three years of [noun] | 99 |
|
| 3 | three of [noun] [noun] | 36 |
|
| 4 | three years [noun] [noun] | 12 |
|
