| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it [adv] [conj] [adv] [to-vb] | 8 |
|
| 2 | it [verb] [adv] [conj] [adv] [to-vb] | 5 |
|
| 3 | it [adv] [conj] [vb past] [adv] [to-vb] | 6 |
|
| 4 | it [adv] [conj] [verb] [adv] [to-vb] | 6 |
|
| 5 | it [adv] [conj] [adv] [adj] [to-vb] | 15 |
|
| 6 | it [adv] [conj] [adv] [adj] [to-vb] | 14 |
|
| 7 | it [adv] [conj] [adv] difficult [to-vb] | 13 |
|
| 8 | it [adv] [conj] [adv] difficult [to-vb] | 13 |
|
