| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] years ['s] service | 118 |
|
| 2 | [adj] years ' service | 118 |
|
| 3 | [adj] years ' service | 118 |
|
| 4 | [num] years [unc] service | 113 |
|
| 5 | 25 years [unc] service | 13 |
|
| 6 | 25 years [unc] service | 13 |
|
| 7 | ten years [unc] service | 8 |
|
| 8 | two years [unc] service | 8 |
|
| 9 | five years [unc] service | 8 |
|
| 10 | ten years [unc] service | 8 |
|
| 11 | five years [unc] service | 8 |
|
| 12 | two years [unc] service | 8 |
|
| 13 | 35 years [unc] service | 6 |
|
| 14 | 35 years [unc] service | 6 |
|
| 15 | 20 years [unc] service | 5 |
|
| 16 | 20 years [unc] service | 5 |
|
| 17 | [det] years [unc] service | 5 |
|
