| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [is] [adv] [v-ing] | 301 |
|
| 2 | but it [is] [adv] [verb] | 293 |
|
| 3 | but [pron] [is] [adv] [v-ing] | 167 |
|
| 4 | but it [is] [adv] [v-ing] | 122 |
|
| 5 | but it [be] [adv] [v-ing] | 95 |
|
