| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] six months | 1207 |
|
| 2 | [noun prp] [prep] six | 172 |
|
| 3 | [noun prp] six months | 21 |
|
| 4 | [noun prp] [prep] months | 12 |
|
