| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | twenty years [art] [noun sg] of | 6 |
|
| 2 | twenty years [art] [noun] of | 6 |
|
| 3 | twenty years [art] [noun] of | 6 |
|
| 4 | twenty years [art] [noun] of | 6 |
|
