| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] least [adj] years | 544 |
|
| 2 | at least [adj] years | 544 |
|
| 3 | at least [adj] years | 544 |
|
| 4 | [prep] least [num] years | 541 |
|
| 5 | [prep] least two years | 118 |
|
| 6 | [prep] least two years | 118 |
|
| 7 | [prep] least three years | 67 |
|
| 8 | [prep] least three years | 67 |
|
| 9 | [prep] least five years | 65 |
|
| 10 | [prep] least five years | 65 |
|
| 11 | [prep] least ten years | 32 |
|
| 12 | [prep] least ten years | 32 |
|
| 13 | [prep] least twenty years | 17 |
|
| 14 | [prep] least twenty years | 17 |
|
| 15 | [prep] least four years | 16 |
|
| 16 | [prep] least four years | 16 |
|
| 17 | [prep] least 10 years | 15 |
|
| 18 | [prep] least 10 years | 15 |
|
| 19 | [prep] least 30 years | 14 |
|
| 20 | [prep] least 30 years | 14 |
|
| 21 | [prep] least fifteen years | 12 |
|
| 22 | [prep] least fifteen years | 12 |
|
| 23 | [prep] least 20 years | 11 |
|
| 24 | [prep] least 20 years | 11 |
|
| 25 | [prep] least 5 years | 9 |
|
| 26 | [prep] least 2 years | 9 |
|
| 27 | [prep] least 5 years | 9 |
|
| 28 | [prep] least 50 years | 9 |
|
| 29 | [prep] least 25 years | 9 |
|
| 30 | [prep] least 50 years | 9 |
|
