| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] the [num ord] 50 years | 28 |
|
| 2 | [noun sg] [prep] the [num ord] 50 years | 20 |
|
| 3 | [verb] [prep] the [num ord] 50 years | 12 |
|
| 4 | [noun pl] [prep] the [num ord] 50 years | 7 |
|
| 5 | [vb pp] [prep] the [num ord] 50 years | 7 |
|
| 6 | [prep] the [num ord] 50 years [coord] | 10 |
|
| 7 | [prep] the [num ord] 50 years [conj] | 10 |
|
| 8 | [prep] the [num ord] 50 years and | 6 |
|
| 9 | [prep] the [num ord] 50 years and | 6 |
|
