| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv prt] to [num] years [unc] | 27 |
|
| 2 | [adv prt] to [adj] years [unc] | 27 |
|
| 3 | [adv prt] [prep] three years [unc] | 7 |
|
| 4 | [adv prt] [prep] three years [unc] | 7 |
|
| 5 | [adv] to three years [unc] | 7 |
|
| 6 | [adv prt] to three [noun] [unc] | 6 |
|
| 7 | [adv prt] to three years [unc] | 6 |
|
| 8 | [adv prt] to three [noun pl] [unc] | 6 |
|
| 9 | [adv prt] to three year [unc] | 6 |
|
| 10 | [adv prt] to three years [unc] | 6 |
|
