| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] twenty year | 53 |
|
| 2 | the twenty year | 41 |
|
| 3 | [art] twenty years | 35 |
|
| 4 | [art] twenty year | 18 |
|
| 5 | a twenty year | 11 |
|
