| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [prep] a [num] [noun] | 1722 |
|
| 2 | [noun sg] [prep] a [num] [noun pl] | 401 |
|
| 3 | [noun sg] [prep] [art] [num] years | 316 |
|
| 4 | [noun sg] [prep] a [num] year | 229 |
|
| 5 | [noun sg] [prep] a [adj] years | 177 |
|
| 6 | [noun] [prep] a [num] years | 65 |
|
