| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [adv prt] since | 27 |
|
| 2 | have been [v-ing] on since | 18 |
|
| 3 | have been going [adv prt] since | 15 |
|
| 4 | has been [v-ing] [adv prt] since | 10 |
|
| 5 | have been [v-ing] [adv prt] since | 7 |
|
| 6 | had been [v-ing] [adv prt] since | 7 |
|
