| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] twenty year | 403 |
|
| 2 | [prep] twenty year | 403 |
|
| 3 | [prep] twenty years | 396 |
|
| 4 | for twenty year | 204 |
|
| 5 | for twenty year | 204 |
|
| 6 | of twenty year | 53 |
|
| 7 | of twenty year | 53 |
|
| 8 | in twenty year | 47 |
|
| 9 | in twenty year | 47 |
|
| 10 | after twenty year | 38 |
|
| 11 | after twenty year | 38 |
|
| 12 | to twenty year | 25 |
|
| 13 | to twenty year | 25 |
|
| 14 | [prep] twenty year | 7 |
|
| 15 | within twenty year | 6 |
|
| 16 | within twenty year | 6 |
|
| 17 | like twenty year | 5 |
|
| 18 | like twenty year | 5 |
|
