| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] more [adj] [to-vb] | 164 |
|
| 2 | [conj] [adv] difficult [to-vb] | 130 |
|
| 3 | [conj] [adv] difficult [to-vb] | 126 |
|
| 4 | [conj] more difficult [to-vb] | 63 |
|
| 5 | [conj] more difficult [verb] | 63 |
|
