| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] years [prep] the | 566 |
|
| 2 | [prep] a [num] [prep] the | 47 |
|
| 3 | [prep] a [num] years [prep] | 33 |
|
| 4 | a [num] years [prep] the | 17 |
|
| 5 | [prep] a [num] years the | 6 |
|
