| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it [is] not [verb] | 199 |
|
| 2 | [coord] it [is] difficult [verb] | 194 |
|
| 3 | it [is] difficult not [verb] | 32 |
|
| 4 | [coord] it [is] difficult not | 8 |
|
