| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | twenty years [adv] i | 16 |
|
| 2 | twenty years [adv] i | 15 |
|
| 3 | twenty years ago i | 13 |
|
| 4 | twenty years ago i | 13 |
|
| 5 | twenty years [conj] i | 9 |
|
| 6 | twenty years and i | 5 |
|
| 7 | twenty years and i | 5 |
|
| 8 | twenty years [coord] i | 5 |
|
| 9 | twenty years i [verb] | 15 |
|
| 10 | twenty years i have | 10 |
|
| 11 | twenty years i [vb base] | 10 |
|
| 12 | twenty years i have | 6 |
|
| 13 | twenty years i [vb past] | 5 |
|
