| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] be doing | 451 |
|
| 2 | [vb base] been doing | 448 |
|
| 3 | [vb base] [been] doing | 448 |
|
| 4 | 've [be] doing | 309 |
|
| 5 | have [be] doing | 139 |
|
