| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] twenty years after [art] [noun] | 5 |
|
| 2 | [adv] twenty years after [art] [noun] | 5 |
|
| 3 | twenty years after [art] [noun] of | 8 |
|
| 4 | twenty years after [art] [noun] [prep] | 8 |
|
| 5 | twenty years after [art] [noun] [prep] | 8 |
|
| 6 | twenty years after [art] [noun] of | 8 |
|
