| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] has be [v-ing] since | 8 |
|
| 2 | [pers pn] has been [v-ing] since | 8 |
|
| 3 | [pers pn] has [been] [v-ing] since | 8 |
|
| 4 | [pers pn] has [be] [v-ing] since | 8 |
|
