| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [pron] [be] [v-ing] [prep] | 2444 |
|
| 2 | is what [pron] [be] [v-ing] | 220 |
|
| 3 | is [pron] [be] [v-ing] [prep] | 88 |
|
| 4 | is what [pron] [be] [prep] | 30 |
|
| 5 | is what [be] [v-ing] [prep] | 18 |
|
