| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it [adv] [to-vb] and [verb] | 6 |
|
| 2 | it [be] [adv] [to-vb] and [verb] | 6 |
|
| 3 | it be [adv] [to-vb] and [verb] | 6 |
|
| 4 | it [adv] [adj] [to-vb] and [verb] | 16 |
|
| 5 | it [adv] [adj] [to-vb] and [verb] | 15 |
|
| 6 | it [adv] [verb] [to-vb] and [verb] | 8 |
|
| 7 | it [adv] difficult [to-vb] and [verb] | 7 |
|
| 8 | it [adv] difficult [to-vb] and [verb] | 7 |
|
| 9 | it [adv] [to-vb] and [verb] [pron] | 5 |
|
