| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] years of [noun] [noun] | 278 |
|
| 2 | twenty [noun] of [noun] [noun] | 23 |
|
| 3 | twenty [noun pl] of [noun] [noun] | 19 |
|
| 4 | twenty years [prep] [noun] [noun] | 10 |
|
| 5 | twenty years [prep] [noun] [noun] | 10 |
|
| 6 | twenty years of [noun] [noun] | 5 |
|
| 7 | twenty year of [noun] [noun] | 5 |
|
