| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] four years ' [noun sg] | 12 |
|
| 2 | [conj] four year ' [noun sg] | 12 |
|
| 3 | [coord] four year ' [noun sg] | 11 |
|
| 4 | or four year ' [noun sg] | 10 |
|
| 5 | or four year ' [noun sg] | 10 |
|
| 6 | [conj] four year ' duration | 8 |
|
