| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] than three years [unc] [noun] | 9 |
|
| 2 | [adv] [subord] three years [unc] [noun] | 9 |
|
| 3 | [adv] than three years [unc] [noun] | 9 |
|
| 4 | [adv] [conj] three years [unc] [noun] | 9 |
|
| 5 | [adv] three years [unc] [noun] [prep] | 5 |
|
| 6 | [adv] three years [unc] [noun] [prep] | 5 |
|
