| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [to-vb] [that] [adv] | 178 |
|
| 2 | [adj] [to-vb] [that] [adv] | 171 |
|
| 3 | difficult [to-vb] [conj] [adv] | 56 |
|
| 4 | difficult [to-vb] [that] [adv] | 7 |
|
| 5 | difficult [verb] [that] [adv] | 6 |
|
| 6 | difficult [to-vb] [that] [adv] | 6 |
|
