| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] not [verb] that | 403 |
|
| 2 | [pron] [be] difficult [verb] that | 132 |
|
| 3 | [pron] [be] difficult not [verb] | 40 |
|
| 4 | [be] difficult not [verb] that | 7 |
|
