| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it is n't it | 20 |
|
| 2 | [v-ing] it is n't [pers pn] | 10 |
|
| 3 | do it is n't [pers pn] | 8 |
|
| 4 | doing it is n't [pers pn] | 5 |
|
