| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] what it is | 93 |
|
| 2 | to know what it is | 14 |
|
| 3 | to see what it is | 11 |
|
| 4 | to understand what it is | 6 |
|
| 5 | to say what it is | 5 |
|
