| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] be reading | 65 |
|
| 2 | [vb base] [been] reading | 65 |
|
| 3 | [vb base] been reading | 65 |
|
| 4 | 've [be] reading | 39 |
|
| 5 | have [be] reading | 26 |
|
