| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] after [num] year ' | 11 |
|
| 2 | [verb] after [num] years ' | 11 |
|
| 3 | retire after [num] year ' | 5 |
|
| 4 | [vb pp] after [num] year ' | 5 |
|
