| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | more difficult [verb] [conj] | 146 |
|
| 2 | [pron] difficult [verb] [conj] | 81 |
|
| 3 | [pron] more difficult [verb] | 80 |
|
| 4 | [pron] more difficult [conj] | 19 |
|
| 5 | [pron] more [verb] [conj] | 13 |
|
