| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] for two months [prep] | 26 |
|
| 2 | [be] [verb] for two months | 20 |
|
| 3 | [be] [verb] for two [prep] | 8 |
|
| 4 | [be] [verb] for months [prep] | 5 |
|
