| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [adv] what it is | 38 |
|
| 2 | [adv] what it is that | 27 |
|
| 3 | [to-vb] what it is that | 20 |
|
| 4 | [to-vb] [adv] it is that | 18 |
|
