| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] six months of | 80 |
|
| 2 | six months of [noun] | 78 |
|
| 3 | [prep] months of [noun] | 76 |
|
| 4 | [prep] six months [noun] | 39 |
|
| 5 | [prep] six of [noun] | 7 |
|
