| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and it is [adv] [verb] | 275 |
|
| 2 | and it is difficult [verb] | 85 |
|
| 3 | it is difficult [adv] [verb] | 56 |
|
| 4 | and it is difficult [adv] | 7 |
|
