| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] [v-ing] | 2153 |
|
| 2 | it [is] not [verb] | 1885 |
|
| 3 | [pron] [is] not [v-ing] | 1591 |
|
| 4 | it [is] not [v-ing] | 780 |
|
| 5 | it [is] [not/n't] [v-ing] | 780 |
|
| 6 | it [be] not [v-ing] | 777 |
|
