| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of [num] year [unc] [noun] | 181 |
|
| 2 | [prep] [num] year [unc] experience | 36 |
|
| 3 | of [adj] year [unc] experience | 13 |
|
| 4 | of [num] [noun] [unc] experience | 11 |
|
