| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be not often [that] | 16 |
|
| 2 | be not often that | 16 |
|
| 3 | be not often that | 16 |
|
| 4 | be not often [conj] | 16 |
|
| 5 | is not often [conj] | 12 |
|
