| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [pron] [be] [v-ing] | 8937 |
|
| 2 | [pron] [pron] [am/are] [v-ing] | 6559 |
|
| 3 | [Wh det] [pron] [am/are] [v-ing] | 5702 |
|
| 4 | what [pron] [am/are] [verb] | 5433 |
|
| 5 | what [pron] [am/are] [v-ing] | 5166 |
|
