| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] since | 5 |
|
| 2 | [verb] been [v-ing] [prep] since | 5 |
|
| 3 | been [v-ing] [prep] [noun] since | 30 |
|
| 4 | been [v-ing] [prep] [noun prp] since | 20 |
|
| 5 | been [v-ing] [prep] [pers pn] since | 10 |
|
| 6 | been [v-ing] [prep] [pron] since | 10 |
|
| 7 | been [v-ing] [prep] [noun sg] since | 6 |
|
