| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [num] year | 757 |
|
| 2 | [prep] [art] twenty [num] | 91 |
|
| 3 | [art] twenty [num] year | 45 |
|
| 4 | [prep] twenty [num] year | 11 |
|
| 5 | [prep] [art] twenty year | 10 |
|
