| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] is not difficult [verb] | 140 |
|
| 2 | but [pers pn] is difficult [verb] | 79 |
|
| 3 | but [pers pn] is not [verb] | 69 |
|
| 4 | but [pers pn] is not difficult | 7 |
|
