| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficult [verb] that [art] [adj] | 24 |
|
| 2 | difficult [verb] that [art] [adj] | 24 |
|
| 3 | difficult [to-vb] that [art] [adj] | 24 |
|
| 4 | difficult [verb] that [art] [adj] | 21 |
|
| 5 | difficult [verb] that the [adj] | 20 |
|
| 6 | difficult believe that [art] [adj] | 6 |
|
| 7 | difficult to believe that [art] [adj] | 6 |
|
