| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is n't [pers pn] [adv] [verb] | 11 |
|
| 2 | is [not/n't] it [adv] [verb] | 10 |
|
| 3 | is [not/n't] [pers pn] [adv] [to-vb] | 5 |
|
