| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] after thirty years | 6 |
|
| 2 | after thirty [adj] years | 5 |
|
| 3 | after thirty years [prep] | 16 |
|
| 4 | after thirty years [prep] | 16 |
|
| 5 | after thirty years of | 12 |
|
| 6 | after thirty years of | 12 |
|
