| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [to-vb] [is] [not/n't] | 6 |
|
| 2 | is [verb] [verb] is [not/n't] | 6 |
|
| 3 | is [verb] [verb] [is] not | 5 |
|
| 4 | is [v-ing] [verb] [is] [not/n't] | 5 |
|
