| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] [verb] a [noun] | 963 |
|
| 2 | [vb mod] [verb] [v-ing] a [noun] | 107 |
|
| 3 | it [vb mod] [verb] [v-ing] [noun] | 31 |
|
| 4 | it [verb] [v-ing] a [noun] | 28 |
|
| 5 | it [vb mod] [verb] [v-ing] a | 11 |
|
