| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [to-vb] [is] the | 37 |
|
| 2 | difficult [to-vb] [be] the | 20 |
|
| 3 | difficult [to-vb] [is] [art] | 15 |
|
| 4 | difficult [verb] [is] the | 14 |
|
