| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] year ['s] [noun] | 1256 |
|
| 2 | [adj] year ['s] service | 129 |
|
| 3 | [num] [noun] ['s] service | 126 |
|
| 4 | [num] year [unc] service | 119 |
|
