| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we have been [v-ing] [prep] | 426 |
|
| 2 | have been [v-ing] [prep] this | 136 |
|
| 3 | we have been [v-ing] this | 29 |
|
| 4 | we have been [prep] this | 24 |
|
