| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [noun] | 1830 |
|
| 2 | have been [v-ing] since | 145 |
|
| 3 | been [v-ing] [noun] since | 29 |
|
| 4 | have been [noun] since | 20 |
|
