| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] 20 years [unc] experience | 6 |
|
| 2 | [adv] 20 years [unc] experience | 6 |
|
| 3 | over 20 years [unc] experience | 5 |
|
| 4 | over 20 years [unc] experience | 5 |
|
| 5 | 20 years [unc] experience [prep] | 9 |
|
| 6 | 20 years [unc] experience [prep] | 9 |
|
| 7 | 20 years [unc] experience in | 6 |
|
| 8 | 20 years [unc] experience in | 6 |
|
