| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [adj] years of [noun] | 338 |
|
| 2 | [adj] twenty years [prep] [noun] | 16 |
|
| 3 | [adj] twenty years [prep] [noun] | 16 |
|
| 4 | [adj] twenty [noun] of [noun] | 15 |
|
| 5 | [adj] twenty [noun pl] of [noun] | 13 |
|
| 6 | [adj] twenty year of [noun] | 6 |
|
| 7 | [adj] twenty years of [noun] | 6 |
|
