| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it [is] | 22845 |
|
| 2 | it [is] [v-ing] | 7295 |
|
| 3 | [coord] [is] [v-ing] | 1058 |
|
| 4 | [coord] it [v-ing] | 12 |
|
