| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | spend [num] years at the | 7 |
|
| 2 | [vb pp] [num] years at the | 7 |
|
| 3 | [verb] two years at the | 5 |
|
| 4 | [vb past] [num] years at the | 5 |
|
