| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [prep] [noun] | 16453 |
|
| 2 | what is [vb pp] [prep] | 1306 |
|
| 3 | what is [prep] [noun] | 214 |
|
| 4 | what is [vb pp] [noun] | 36 |
|
