| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [pers pn] | 889 |
|
| 2 | [v-ing] it is | 388 |
|
| 3 | [v-ing] it [pers pn] | 152 |
|
| 4 | [v-ing] is [pers pn] | 114 |
|
