| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] years before | 462 |
|
| 2 | [num] years before | 343 |
|
| 3 | [det] years before | 116 |
|
| 4 | two years before | 44 |
|
| 5 | two years before | 44 |
|
| 6 | many years before | 42 |
|
| 7 | many years before | 42 |
|
| 8 | ten years before | 34 |
|
| 9 | ten years before | 34 |
|
| 10 | some years before | 28 |
|
| 11 | some years before | 28 |
|
| 12 | twenty years before | 26 |
|
| 13 | twenty years before | 26 |
|
| 14 | few years before | 23 |
|
| 15 | five years before | 23 |
|
| 16 | five years before | 23 |
|
| 17 | few years before | 23 |
|
| 18 | thirty years before | 22 |
|
| 19 | thirty years before | 22 |
|
| 20 | three years before | 21 |
|
| 21 | three years before | 21 |
|
| 22 | hundred years before | 20 |
|
| 23 | hundred years before | 20 |
|
| 24 | [prep] years before | 15 |
|
| 25 | [prep] years before | 15 |
|
| 26 | several years before | 14 |
|
| 27 | fifty years before | 14 |
|
| 28 | fifty years before | 14 |
|
| 29 | several years before | 14 |
|
| 30 | [verb] years before | 14 |
|
