| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] [adj] years [unc] | 37 |
|
| 2 | [num] four [noun] [unc] | 19 |
|
| 3 | [num] four [noun pl] [unc] | 12 |
|
| 4 | [adj] four years [unc] | 8 |
|
| 5 | [num] four year [unc] | 6 |
|
