| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | in a [adj] years | 181 |
|
| 2 | [prep] a million years | 41 |
|
| 3 | [prep] a million years | 41 |
|
| 4 | in a million [noun] | 39 |
|
| 5 | in a million [noun pl] | 35 |
|
| 6 | in [art] million years | 29 |
|
| 7 | in a million year | 28 |
|
| 8 | in a million years | 28 |
|
