| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] two years ' [noun] [verb] | 5 |
|
| 2 | [prep] two years ' [noun] [verb] | 5 |
|
| 3 | two years ' [noun] [prep] [verb] | 5 |
|
| 4 | two years ' [noun] [prep] [verb] | 5 |
|
