| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been doing this for | 14 |
|
| 2 | [vb base] been doing this for | 14 |
|
| 3 | [verb] been doing this for | 14 |
|
| 4 | 've been doing this for | 8 |
|
| 5 | have been doing this for | 6 |
|
| 6 | been doing this for [adj] | 8 |
|
| 7 | been doing this for [num] | 6 |
|
