| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] some [prep] | 20 |
|
| 2 | have been [v-ing] at [prep] | 11 |
|
| 3 | have been [v-ing] at some | 9 |
|
| 4 | been [v-ing] at some [prep] | 7 |
|
