| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] this for | 21 |
|
| 2 | have been doing this for | 14 |
|
| 3 | have been [v-ing] this for | 10 |
|
| 4 | 've been [v-ing] this for | 10 |
|
