| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we [vb base] [been] [v-ing] | 1062 |
|
| 2 | [vb base] [been] [v-ing] at | 159 |
|
| 3 | we [vb base] [v-ing] at | 13 |
|
| 4 | we [vb base] [been] at | 11 |
|
