| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] [num] years | 6781 |
|
| 2 | [noun] [prep] [num] [unc] | 5082 |
|
| 3 | [prep] [num] years [unc] | 762 |
|
| 4 | [noun] [prep] years [unc] | 28 |
|
| 5 | [noun] [num] years [unc] | 13 |
|
