| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we have been [v-ing] [prep] | 426 |
|
| 2 | what we have been [v-ing] | 79 |
|
| 3 | what have been [v-ing] [prep] | 67 |
|
| 4 | what we have been [prep] | 5 |
|
