| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [adj] [verb] that | 246 |
|
| 2 | [adv] difficult [verb] that | 73 |
|
| 3 | not difficult [verb] [conj] | 31 |
|
| 4 | [not/n't] difficult [verb] that | 23 |
|
| 5 | not difficult [verb] that | 23 |
|
| 6 | not difficult [verb] that | 21 |
|
| 7 | not difficult [verb] [that] | 21 |
|
