| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb -s] be [v-ing] [prep] | 108 |
|
| 2 | [Wh det] [vb -s] be [verb] at | 29 |
|
| 3 | [pron] [vb -s] be [v-ing] at | 26 |
|
| 4 | [Wh det] [verb] be [v-ing] at | 11 |
|
| 5 | [Wh det] [vb -s] [be] [v-ing] at | 6 |
|
