| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] years of [noun] | 2454 |
|
| 2 | twenty [adj] of [noun] | 276 |
|
| 3 | twenty years of [noun] | 42 |
|
| 4 | twenty [adj] years of | 20 |
|
| 5 | twenty [adj] years [noun] | 10 |
|
