| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [is] [v-ing] | 1906 |
|
| 2 | [subord] it [is] [v-ing] | 812 |
|
| 3 | because it [is] [verb] | 388 |
|
| 4 | because [pron] [is] [v-ing] | 241 |
|
| 5 | because it [be] [v-ing] | 169 |
|
| 6 | because it [is] [v-ing] | 105 |
|
