| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it 's [adv] [adj] [conj] | 1475 |
|
| 2 | it 's [adv] [adj] [conj] | 1295 |
|
| 3 | it [be] [adv] difficult [conj] | 42 |
|
| 4 | it be [adv] difficult [conj] | 42 |
|
| 5 | it [is] [adv] difficult [conj] | 31 |
|
| 6 | it 's [adv] difficult [conj] | 15 |
|
| 7 | [pron] 's [adv] difficult [conj] | 13 |
|
| 8 | it 's [adv] difficult [conj] | 13 |
|
