| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] | 19902 |
|
| 2 | have been [prep] | 11263 |
|
| 3 | been [v-ing] [prep] | 6841 |
|
| 4 | have [v-ing] [prep] | 46 |
|
