| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] to [num] years [unc] [noun] | 23 |
|
| 2 | [adv] to [adj] years [unc] [noun] | 23 |
|
| 3 | [adv] [prep] three years [unc] [noun] | 8 |
|
| 4 | [adv] to three [noun] [unc] [noun] | 5 |
|
| 5 | [adv] to three year [unc] [noun] | 5 |
|
| 6 | [adv] to three [noun pl] [unc] [noun] | 5 |
|
| 7 | [adv] to three years [unc] [noun] | 5 |
|
