| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] twenty years | 396 |
|
| 2 | [prep] years [pers pn] | 217 |
|
| 3 | twenty years [pers pn] | 49 |
|
| 4 | [prep] twenty [pers pn] | 10 |
|
