| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] is not difficult [verb] [that] | 15 |
|
| 2 | it is not difficult [verb] [that] | 15 |
|
| 3 | [pers pn] is not difficult [verb] [that] | 15 |
|
| 4 | it is not difficult [verb] [that] | 15 |
|
| 5 | is not difficult [verb] [that] [art] | 5 |
|
| 6 | is not difficult [verb] [that] [art] | 5 |
|
