| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | two [prep] [num] years ' | 6 |
|
| 2 | two [prep] [num] years ' | 6 |
|
| 3 | two [prep] [num] years [unc] | 6 |
|
| 4 | two [prep] [num] years ['s] | 6 |
|
| 5 | two to [num] years [unc] | 6 |
|
