| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and it [is] difficult [to-vb] [conj] | 11 |
|
| 2 | and it is difficult [verb] [conj] | 8 |
|
| 3 | and it [is] difficult [verb] that | 6 |
|
| 4 | and it [is] difficult [verb] [that] | 6 |
|
| 5 | and it [is] difficult [verb] that | 6 |
|
| 6 | and it [is] difficult believe [conj] | 5 |
|
| 7 | and it [is] difficult to believe [conj] | 5 |
|
