| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] it for some time | 7 |
|
| 2 | been [verb] it for some time | 7 |
|
| 3 | be do it for some time | 5 |
|
| 4 | be doing it for some time | 5 |
|
