| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [prep] [num] years | 5082 |
|
| 2 | [noun sg] [prep] a [num] | 2679 |
|
| 3 | [prep] a [num] years | 236 |
|
| 4 | [noun sg] a [num] years | 21 |
|
