| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what is [verb] | 1472 |
|
| 2 | [prep] what is [adv] | 791 |
|
| 3 | what is [adv] [verb] | 622 |
|
| 4 | [prep] what [adv] [verb] | 233 |
|
| 5 | [prep] is [adv] [verb] | 50 |
|
