| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at least [num] year [unc] experience | 6 |
|
| 2 | at least [num] year [unc] experience | 6 |
|
| 3 | [prep] least [num] year [unc] experience | 6 |
|
| 4 | [prep] least [num] year [unc] experience | 6 |
|
| 5 | least [num] year [unc] experience [prep] | 5 |
|
| 6 | least [num] year [unc] experience [prep] | 5 |
|
