| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 've be [v-ing] this for | 10 |
|
| 2 | 've [been] [v-ing] this for | 10 |
|
| 3 | 've been [v-ing] this for | 10 |
|
| 4 | 've [be] doing this for | 8 |
|
