| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] years [noun] [vb mod] | 6 |
|
| 2 | [prep] years [noun] [modal v] | 6 |
|
| 3 | of years [noun] [modal v] | 5 |
|
| 4 | of years [noun] [modal v] | 5 |
|
