| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [adv prt] | 1378 |
|
| 2 | have been [v-ing] since | 145 |
|
| 3 | have been [adv prt] since | 42 |
|
| 4 | been [v-ing] [adv prt] since | 27 |
|
