| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is it [noun] | 580 |
|
| 2 | is [noun] [to-vb] | 497 |
|
| 3 | is it [to-vb] | 94 |
|
| 4 | it [noun] [to-vb] | 34 |
|
