| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [pron] [be] [v-ing] [prep] | 2444 |
|
| 2 | 's what [pron] [be] [v-ing] | 635 |
|
| 3 | 's what [pron] [be] [prep] | 61 |
|
| 4 | 's [pron] [be] [v-ing] [prep] | 57 |
|
| 5 | 's what [be] [v-ing] [prep] | 19 |
|
