| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it be difficult [verb] [coord] | 7 |
|
| 2 | [coord] it be difficult [verb] [coord] | 5 |
|
| 3 | it [vb mod] be difficult [verb] [coord] | 6 |
|
| 4 | it [modal v] be difficult [verb] [coord] | 6 |
|
| 5 | it be [adv] difficult [verb] [coord] | 10 |
|
| 6 | it be [adv] difficult [verb] [coord] | 9 |
|
| 7 | it be difficult [verb] [noun] [coord] | 9 |
|
| 8 | it be difficult [verb] [adj] [coord] | 6 |
|
| 9 | it be difficult [verb] [adj] [coord] | 6 |
|
| 10 | it be difficult [verb] [subord] [coord] | 5 |
|
| 11 | it be difficult [verb] whether [coord] | 5 |
|
| 12 | it be difficult [verb] [conj] [coord] | 5 |
|
| 13 | it be difficult [verb] [adv] [coord] | 5 |
|
| 14 | it be difficult [verb] [noun pl] [coord] | 5 |
|
| 15 | it be difficult [verb] whether [coord] | 5 |
|
| 16 | it be difficult [verb] [coord] [verb] | 6 |
|
