| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [been] doing it for | 21 |
|
| 2 | [vb base] been doing it for | 21 |
|
| 3 | 've [been] doing it for | 16 |
|
| 4 | have [been] doing it for | 5 |
|
