| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] four years | 236 |
|
| 2 | [noun sg] four years | 135 |
|
| 3 | [noun prp] four years | 67 |
|
| 4 | [noun pl] four years | 29 |
|
| 5 | [n mass] four years | 5 |
|
