| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [v-ing] since | 51 |
|
| 2 | [vb -s] been shipping since | 7 |
|
| 3 | [vb -s] been running since | 6 |
|
| 4 | 's been [v-ing] since | 6 |
|
