| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] this | 136 |
|
| 2 | have been [v-ing] [prep] [prep] | 74 |
|
| 3 | have been [v-ing] this [prep] | 31 |
|
| 4 | been [v-ing] [prep] this [prep] | 17 |
|
| 5 | have been [prep] this [prep] | 9 |
|
