| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] [pron] [is] [adv] [v-ing] | 245 |
|
| 2 | but [pron] [is] [adv] [v-ing] | 167 |
|
| 3 | but [subord] [pron] [is] [adv] | 108 |
|
| 4 | but [subord] [pron] [is] [v-ing] | 44 |
|
