| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [not/n't] at | 384 |
|
| 2 | [is] at this | 134 |
|
| 3 | [is] [not/n't] this | 122 |
|
| 4 | [not/n't] at this | 75 |
|
