| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is more [adj] and | 197 |
|
| 2 | is [adv] difficult and | 40 |
|
| 3 | is [adv] difficult and | 38 |
|
| 4 | is more difficult [conj] | 30 |
|
| 5 | be more difficult and | 14 |
|
| 6 | [be] more difficult and | 14 |
|
| 7 | is more difficult and | 5 |
|
| 8 | [is] more difficult and | 5 |
|
