| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] difficult for us | 7 |
|
| 2 | it [is] [adv] difficult for us | 7 |
|
| 3 | it [is] very difficult for us | 6 |
|
| 4 | it is [adv] difficult for us | 5 |
|
