| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [not/n't] [v-ing] | 2040 |
|
| 2 | [conj] is [not/n't] | 1650 |
|
| 3 | [conj] is [v-ing] | 1511 |
|
| 4 | [conj] [not/n't] [v-ing] | 1234 |
|
