| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] [unc] [noun] | 539 |
|
| 2 | [prep] [num] year [noun] | 276 |
|
| 3 | [num] year [unc] [noun] | 127 |
|
| 4 | [prep] [num] year [unc] | 67 |
|
| 5 | [prep] year [unc] [noun] | 6 |
|
