| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] 10 years [unc] | 51 |
|
| 2 | 10 years [unc] time | 13 |
|
| 3 | [prep] 10 years time | 7 |
|
| 4 | [prep] years [unc] time | 5 |
|
