| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb -s] be [v-ing] | 318 |
|
| 2 | [Wh det] be [v-ing] at | 112 |
|
| 3 | [vb -s] be [v-ing] at | 89 |
|
| 4 | [Wh det] [vb -s] be at | 12 |
|
| 5 | [Wh det] [vb -s] [v-ing] at | 5 |
|
