| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | twenty year ['s] [noun sg] | 39 |
|
| 2 | twenty years [unc] [noun sg] | 37 |
|
| 3 | twenty year ' [noun sg] | 37 |
|
| 4 | twenty year ' [noun sg] | 37 |
|
| 5 | twenty year [unc] time | 13 |
|
| 6 | twenty year [unc] worth | 6 |
|
