| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] years of [noun] | 708 |
|
| 2 | [prep] [adj] years of [noun sg] | 654 |
|
| 3 | [prep] [adj] [noun] of service | 121 |
|
| 4 | [prep] [adj] [noun pl] of service | 81 |
|
| 5 | [prep] [adj] year of service | 31 |
|
| 6 | [prep] [adj] years [prep] service | 29 |
|
| 7 | [prep] [adj] years of service | 27 |
|
| 8 | [prep] [adj] years of service | 27 |
|
