| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if it [is] [not/n't] | 690 |
|
| 2 | if it [is] not | 556 |
|
| 3 | if it is [not/n't] | 461 |
|
| 4 | if it 's [not/n't] | 229 |
|
| 5 | if it [is] n't | 134 |
|
