| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] [prep] four years | 13 |
|
| 2 | [vb pp] [adv] [prep] four years | 7 |
|
| 3 | [adv] [adv] [prep] four years | 5 |
|
| 4 | be [adv] [prep] four years | 5 |
|
| 5 | [be] [adv] [prep] four years | 5 |
|
| 6 | [adv] [adj] [prep] four years | 10 |
|
| 7 | [adv] [num] [prep] four years | 8 |
|
| 8 | [adv] [verb] [prep] four years | 8 |
|
| 9 | [adv] three [prep] four years | 6 |
|
| 10 | [adv] three [prep] four years | 6 |
|
| 11 | [adv] [vb pp] [prep] four years | 5 |
|
| 12 | [adv] [prep] [adv] four years | 8 |
|
| 13 | [adv] [prep] [adv] four years | 8 |
|
| 14 | [adv] [prep] four years [prep] | 11 |
|
| 15 | [adv] [prep] four years [prep] | 11 |
|
