| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] 20 years [pers pn] | 7 |
|
| 2 | [prep] 20 years [pers pn] | 7 |
|
| 3 | for 20 years [pers pn] | 5 |
|
| 4 | for 20 years [pers pn] | 5 |
|
| 5 | [adj] 20 years [pers pn] | 5 |
|
| 6 | 20 years [conj] [pers pn] | 22 |
|
| 7 | 20 years [subord] [pers pn] | 13 |
|
| 8 | 20 years [adv] [pers pn] | 9 |
|
| 9 | 20 years and [pers pn] | 9 |
|
| 10 | 20 years [coord] [pers pn] | 9 |
|
| 11 | 20 years and [pers pn] | 9 |
|
| 12 | 20 years [adv] [pers pn] | 6 |
|
| 13 | 20 years since [pers pn] | 6 |
|
| 14 | 20 years since [pers pn] | 6 |
|
| 15 | 20 years ago [pers pn] | 5 |
|
| 16 | 20 years ago [pers pn] | 5 |
|
| 17 | 20 years [pers pn] [verb] | 11 |
|
| 18 | 20 years [pers pn] have | 8 |
|
