| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adv] [num] year [unc] [noun] | 59 |
|
| 2 | [prep] [adv] [num] [noun] [unc] experience | 21 |
|
| 3 | [prep] [adv] [adj] year [unc] experience | 21 |
|
| 4 | [prep] [adv] [num] year [unc] experience | 21 |
|
