| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been [v-ing] so | 27 |
|
| 2 | have [been] [v-ing] so | 15 |
|
| 3 | 've [been] [v-ing] so | 12 |
|
| 4 | [vb base] [been] doing so | 9 |
|
