| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it [is] [adv] difficult [verb] | 105 |
|
| 2 | [coord] it [is] [adv] difficult [to-vb] | 104 |
|
| 3 | [coord] it [is] [adv] [adj] to see | 48 |
|
| 4 | [coord] it [is] [adv] [adj] to see | 47 |
|
| 5 | [coord] it [be] [adv] difficult to see | 12 |
|
| 6 | [conj] it [is] [adv] difficult to see | 11 |
|
| 7 | [coord] [pers pn] [is] [adv] difficult to see | 10 |
|
| 8 | [coord] it [is] [adv] difficult see | 10 |
|
| 9 | [coord] it [is] [adv] difficult to see | 10 |
|
| 10 | [coord] [pron] [is] [adv] difficult to see | 10 |
|
| 11 | [coord] it [is] [adv] difficult to see | 10 |
|
