| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] difficult believe that [det] | 10 |
|
| 2 | [pers pn] [be] difficult believe that [det] | 10 |
|
| 3 | it [be] difficult believe that [det] | 10 |
|
| 4 | it [be] difficult believe that [det] | 10 |
|
