| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [v-ing] [prep] [verb] | 308 |
|
| 2 | but it [is] [prep] [verb] | 80 |
|
| 3 | but it [is] [v-ing] [prep] | 57 |
|
| 4 | but it [is] [v-ing] [verb] | 26 |
|
