| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 've been [verb] at | 79 |
|
| 2 | 've been [v-ing] at | 69 |
|
| 3 | 've been look at | 40 |
|
| 4 | 've been looking at | 40 |
|
| 5 | 've been [vb pp] at | 10 |
|
| 6 | 've been work at | 7 |
|
| 7 | 've been working at | 7 |
|
