| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adv] [adj] [to-vb] [coord] [vb infin] | 17 |
|
| 2 | [pron] [adv] difficult [to-vb] [coord] [vb infin] | 8 |
|
| 3 | it [adv] difficult [to-vb] [conj] [vb infin] | 8 |
|
| 4 | it [adv] difficult [to-vb] [coord] [vb infin] | 8 |
|
| 5 | it [adv] difficult [verb] [coord] [vb infin] | 8 |
|
| 6 | it [adv] difficult [to-vb] [coord] [vb infin] | 8 |
|
| 7 | [pers pn] [adv] difficult [to-vb] [coord] [vb infin] | 8 |
|
| 8 | it [adv] difficult [to-vb] [coord] [verb] | 8 |
|
