| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | after [adj] years | 1853 |
|
| 2 | after [num] years | 1681 |
|
| 3 | [prep] thirty years | 225 |
|
| 4 | after thirty [noun] | 33 |
|
| 5 | after thirty [noun pl] | 33 |
|
| 6 | after thirty year | 26 |
|
| 7 | after thirty years | 26 |
|
