| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] after [num] year ' | 10 |
|
| 2 | [prep] [num] after [num] year ' | 10 |
|
| 3 | in [num] after [num] year ' | 9 |
|
| 4 | in [num] after [num] year ' | 9 |
|
| 5 | [num] after [num] year ' [noun sg] | 12 |
|
| 6 | [num] after [num] year ' [noun] | 12 |
|
| 7 | [num] after [num] year ' service | 7 |
|
| 8 | [num] after [num] year ' service | 7 |
|
