| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been doing [adv] for | 7 |
|
| 2 | have been doing [adv] [prep] | 7 |
|
| 3 | [vb base] been doing so [prep] | 5 |
|
| 4 | 've been doing [adv] [prep] | 5 |
|
