| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficult [to-vb] that [art] | 88 |
|
| 2 | difficult [to-vb] that [art] | 88 |
|
| 3 | difficult [to-vb] that the | 64 |
|
| 4 | difficult [to-vb] that the | 64 |
|
| 5 | difficult to believe that [art] | 24 |
|
| 6 | difficult [to-vb] that a | 21 |
|
| 7 | difficult [to-vb] that a | 19 |
|
| 8 | difficult to argue that [art] | 13 |
|
| 9 | difficult to imagine that [art] | 7 |
|
| 10 | difficult to see that [art] | 6 |
|
