| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | two years ' [noun] | 173 |
|
| 2 | two years ' [noun sg] | 167 |
|
| 3 | [adj] years ' service | 118 |
|
| 4 | [num] years ' service | 113 |
|
| 5 | two years ' service | 8 |
|
| 6 | two years ' service | 8 |
|
| 7 | two years ' service | 8 |
|
| 8 | two [noun pl] ' service | 8 |
|
| 9 | two [noun] ' service | 8 |
|
| 10 | two years [unc] service | 8 |
|
| 11 | two years ['s] service | 8 |
|
| 12 | two year ' service | 8 |
|
