| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] what it is that | 21 |
|
| 2 | [adv] what [pers pn] is that | 21 |
|
| 3 | [adv] what [pron] is that | 21 |
|
| 4 | [adv] what it is that | 21 |
|
| 5 | exactly what [pron] is that | 13 |
|
