| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] at least [adj] year | 356 |
|
| 2 | [prep] at least [art] [adj] | 221 |
|
| 3 | [prep] least [art] [adj] year | 41 |
|
| 4 | at least [art] [adj] year | 41 |
|
| 5 | [prep] at least [art] year | 40 |
|
