| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [adj] years | 237 |
|
| 2 | [noun] [prep] a thousand [noun] | 125 |
|
| 3 | [noun] [prep] a thousand [noun pl] | 104 |
|
| 4 | [noun] [prep] a [num] years | 65 |
|
| 5 | [noun] [prep] [art] thousand years | 17 |
|
| 6 | [noun] [prep] a thousand year | 16 |
|
| 7 | [noun] [prep] a thousand years | 16 |
|
