| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] year [unc] experience | 108 |
|
| 2 | year [unc] experience [prep] | 85 |
|
| 3 | [num] year experience [prep] | 19 |
|
| 4 | [num] year [unc] [prep] | 11 |
|
