| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [verb] [been] [v-ing] [prep] | 190 |
|
| 2 | [conj] [verb] [been] [verb] at | 91 |
|
| 3 | [conj] [verb] [be] [v-ing] at | 12 |
|
