| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [verb] at | 2082 |
|
| 2 | have [been] [v-ing] at | 446 |
|
| 3 | have [been] trading [prep] | 24 |
|
| 4 | have [been] trading [prep] | 24 |
|
| 5 | have [be] trading at | 5 |
|
| 6 | have [been] trading at | 5 |
|
| 7 | [verb] [been] trading at | 5 |
|
| 8 | have [been] trade at | 5 |
|
