| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] least [adj] years [unc] | 35 |
|
| 2 | [prep] least [num] years [unc] | 35 |
|
| 3 | [prep] least three [noun pl] [unc] | 7 |
|
| 4 | [prep] least three [noun] [unc] | 7 |
|
| 5 | [prep] [adv] three years [unc] | 6 |
|
| 6 | [prep] least three year [unc] | 5 |
|
| 7 | [prep] least three years [unc] | 5 |
|
