| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] the [num ord] twenty years | 200 |
|
| 2 | [noun] [prep] the [num ord] twenty | 120 |
|
| 3 | [noun] [prep] the [num ord] years | 78 |
|
| 4 | [noun] [prep] the twenty years | 9 |
|
