| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | retire [prep] [num] year ' [noun] | 6 |
|
| 2 | retire [prep] [num] year ' [noun sg] | 6 |
|
| 3 | retire [prep] [num] year ' service | 5 |
|
| 4 | retire [prep] [num] year ' service | 5 |
|
