| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we have been doing [prep] | 19 |
|
| 2 | we [vb base] been doing [prep] | 19 |
|
| 3 | we have been doing [prep] | 11 |
|
| 4 | we 've been doing [prep] | 8 |
|
| 5 | we [verb] been doing for | 6 |
|
