| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] [be] [verb] for three months | 5 |
|
| 2 | [vb -s] been [verb] for three months | 5 |
|
| 3 | [vb -s] [be] [verb] for three months | 5 |
|
| 4 | [vb -s] be [verb] for three months | 5 |
|
| 5 | [vb -s] [been] [verb] for three months | 5 |
|
| 6 | has [be] [verb] for three months | 5 |
|
