| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [verb] a [noun] | 963 |
|
| 2 | because it [verb] a [noun] | 109 |
|
| 3 | because it [modal v] [verb] [noun] | 49 |
|
| 4 | because it [modal v] [verb] a | 20 |
|
