| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [not/n't] often that | 21 |
|
| 2 | be not often [that] | 16 |
|
| 3 | is [not/n't] often [that] | 15 |
|
| 4 | be n't often [that] | 5 |
|
