| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] is difficult believe [conj] [det] | 6 |
|
| 2 | it is difficult believe [conj] [det] | 6 |
|
| 3 | [pers pn] is difficult believe [conj] [det] | 6 |
|
| 4 | it is difficult believe [conj] [det] | 6 |
|
