| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been [v-ing] [adv prt] since | 8 |
|
| 2 | have be [v-ing] [adv prt] since | 7 |
|
| 3 | [vb base] be [v-ing] on since | 5 |
|
