| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficult believe [conj] this | 6 |
|
| 2 | difficult believe that this | 6 |
|
| 3 | difficult believe that this | 6 |
|
| 4 | difficult believe [conj] this | 6 |
|
| 5 | difficult to believe [conj] this | 6 |
|
| 6 | difficult believe [that] this | 6 |
|
