| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] for [num] years [prep] the | 21 |
|
| 2 | [vb past] for [num] years in the | 8 |
|
| 3 | [vb past] for [num] years at the | 7 |
|
| 4 | worked for [num] years [prep] the | 6 |
|
| 5 | served for [num] years [prep] the | 5 |
|
