| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [pron] more difficult [verb] [conj] | 5 |
|
| 2 | [pron] [be] more difficult [verb] [conj] | 13 |
|
| 3 | [pron] be more difficult [verb] [conj] | 13 |
|
| 4 | [pron] [is] more difficult [verb] [conj] | 10 |
|
| 5 | [pron] is more difficult [verb] [conj] | 10 |
|
