| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] be difficult to believe [adj] | 5 |
|
| 2 | [pers pn] be difficult believe [adj] | 5 |
|
| 3 | it be difficult believe [adj] | 5 |
|
| 4 | [pron] be difficult believe [det] | 5 |
|
| 5 | it be difficult believe [adj] | 5 |
|
