| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [to-vb] [noun] | 2738 |
|
| 2 | is it [noun] | 580 |
|
| 3 | it [to-vb] [noun] | 384 |
|
| 4 | is it [to-vb] | 94 |
|
