| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [is] [v-ing] | 1906 |
|
| 2 | but it [is] [verb] | 664 |
|
| 3 | [coord] it [is] [v-ing] | 659 |
|
| 4 | but [pron] [is] [v-ing] | 554 |
|
| 5 | but it [be] [v-ing] | 307 |
|
| 6 | but it [is] [v-ing] | 218 |
|
