| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [pron] [vb base] [be] [v-ing] [prep] | 85 |
|
| 2 | what [pron] [vb base] [be] [v-ing] [prep] | 83 |
|
| 3 | what [pron] [verb] [be] [v-ing] at | 10 |
|
| 4 | [pron] [pron] [vb base] [be] [v-ing] at | 9 |
|
| 5 | what [pron] [vb base] [be] [verb] at | 7 |
|
| 6 | [Wh det] [pron] [vb base] [be] [v-ing] at | 7 |
|
| 7 | what [pron] [vb base] [be] [v-ing] at | 6 |
|
| 8 | what [pron] [vb base] [be] [v-ing] at | 6 |
|
