| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] four years | 324 |
|
| 2 | time [prep] [adj] years | 272 |
|
| 3 | [noun sg] [prep] four years | 251 |
|
| 4 | time [prep] [num] years | 238 |
|
| 5 | time [prep] four [noun] | 34 |
|
| 6 | time [prep] four [noun pl] | 33 |
|
| 7 | time [prep] four years | 17 |
|
| 8 | time [prep] four year | 15 |
|
| 9 | time [prep] four years | 15 |
|
