| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | years [unc] [noun sg] | 1250 |
|
| 2 | 20 years [unc] | 53 |
|
| 3 | 20 years [noun sg] | 20 |
|
| 4 | 20 [unc] [noun sg] | 10 |
|
