| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [v-ing] [det] [prep] | 110 |
|
| 2 | have [been] [v-ing] at [det] | 31 |
|
| 3 | have [been] [v-ing] at [prep] | 11 |
|
| 4 | [been] [v-ing] at [det] [prep] | 9 |
|
