| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | three years [unc] [noun] | 146 |
|
| 2 | [prep] three years [unc] | 102 |
|
| 3 | [prep] three years [noun] | 23 |
|
| 4 | [prep] years [unc] [noun] | 22 |
|
| 5 | [prep] three [unc] [noun] | 10 |
|
