| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [modal v] be [v-ing] at | 355 |
|
| 2 | [Wh det] [modal v] be [verb] at | 186 |
|
| 3 | [Wh det] [modal v] be [v-ing] [prep] | 67 |
|
| 4 | [Wh det] [modal v] be [v-ing] [prep] | 67 |
|
| 5 | [Wh det] [modal v] [be] [v-ing] at | 6 |
|
| 6 | [Wh det] [modal v] [be] [v-ing] at | 6 |
|
| 7 | [Wh det] [modal v] be [v-ing] at | 6 |
|
| 8 | [Wh det] [modal v] be [v-ing] at | 6 |
|
