| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | after [adj] years | 1853 |
|
| 2 | after [num] years | 1681 |
|
| 3 | [prep] twenty years | 396 |
|
| 4 | after twenty [noun] | 71 |
|
| 5 | after twenty [noun pl] | 70 |
|
| 6 | after twenty year | 38 |
|
| 7 | after twenty years | 37 |
|
