| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] only a few months | 16 |
|
| 2 | [prep] only a few months | 16 |
|
| 3 | [prep] only a few months | 16 |
|
| 4 | for only a few months | 8 |
|
| 5 | for only a few months | 8 |
|
