| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] two years [pers pn] | 65 |
|
| 2 | [prep] years [pers pn] [modal v] | 25 |
|
| 3 | two years [pers pn] [modal v] | 22 |
|
| 4 | [prep] two years [modal v] | 12 |
|
| 5 | [prep] two [pers pn] [modal v] | 10 |
|
