| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what it is [prep] | 267 |
|
| 2 | [v-ing] what it is | 30 |
|
| 3 | [v-ing] what is [prep] | 26 |
|
| 4 | [v-ing] it is [prep] | 17 |
|
