| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is not often that | 14 |
|
| 2 | [pers pn] is not often that | 14 |
|
| 3 | it is not often that | 14 |
|
| 4 | [pron] is not often that | 14 |
|
| 5 | is not often that [art] | 9 |
|
| 6 | is not often that [art] | 9 |
|
| 7 | is not often that the | 5 |
|
| 8 | is not often that the | 5 |
|
