| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adv] twenty years | 123 |
|
| 2 | [prep] [adv] twenty years | 123 |
|
| 3 | for [adv] twenty years | 83 |
|
| 4 | for [adv] twenty years | 83 |
|
| 5 | [verb] [adv] twenty years | 40 |
|
| 6 | [noun] [adv] twenty years | 27 |
|
| 7 | [adv] [adv] twenty years | 26 |
|
| 8 | [be] [adv] twenty years | 22 |
|
| 9 | be [adv] twenty years | 22 |
|
| 10 | [vb pp] [adv] twenty years | 21 |
|
| 11 | at [adv] twenty years | 17 |
|
| 12 | at [adv] twenty years | 17 |
|
| 13 | [adv] [adv] twenty years | 15 |
|
| 14 | [noun sg] [adv] twenty years | 15 |
|
| 15 | [vb past] [adv] twenty years | 11 |
|
| 16 | [conj] [adv] twenty years | 10 |
|
| 17 | [adv prt] [adv] twenty years | 9 |
|
| 18 | of [adv] twenty years | 8 |
|
| 19 | [noun prp] [adv] twenty years | 8 |
|
| 20 | was [adv] twenty years | 8 |
|
| 21 | [is] [adv] twenty years | 8 |
|
| 22 | [was/were] [adv] twenty years | 8 |
|
| 23 | of [adv] twenty years | 8 |
|
| 24 | [coord] [adv] twenty years | 7 |
|
| 25 | [adj] [adv] twenty years | 6 |
|
| 26 | after [adv] twenty years | 5 |
|
| 27 | in [adv] twenty years | 5 |
|
| 28 | have [adv] twenty years | 5 |
|
| 29 | 's [adv] twenty years | 5 |
|
| 30 | in [adv] twenty years | 5 |
|
