| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] two years ' [noun] | 103 |
|
| 2 | [noun] [prep] two years ' | 61 |
|
| 3 | [noun] [prep] years ' [noun] | 18 |
|
| 4 | [noun] [prep] two years [noun] | 15 |
|
