| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [vb mod] have been doing | 5 |
|
| 2 | i [vb mod] have be doing | 5 |
|
| 3 | i [vb mod] have [been] doing | 5 |
|
| 4 | i [vb mod] have [be] doing | 5 |
|
