| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] three year of [noun sg] | 33 |
|
| 2 | [prep] three year of [noun sg] | 33 |
|
| 3 | [prep] three years of [noun sg] | 33 |
|
| 4 | after three year of [noun sg] | 17 |
|
