| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [is] [adv] | 3510 |
|
| 2 | what [is] [adv] | 2924 |
|
| 3 | [pron] [is] usually | 1135 |
|
| 4 | what [be] usually | 48 |
|
| 5 | what [is] usually | 34 |
|
