| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] is [vb pp] [prep] | 3166 |
|
| 2 | [prep] what is [vb pp] [prep] | 519 |
|
| 3 | [noun] what is [vb pp] [prep] | 27 |
|
| 4 | [prep] [noun] what is [vb pp] | 8 |
|
