| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it 's [adv] difficult [verb] | 199 |
|
| 2 | and it 's [adv] [verb] | 123 |
|
| 3 | and it 's [adv] difficult | 16 |
|
| 4 | and it 's difficult [verb] | 15 |
|
