| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [adv] for us [verb] | 28 |
|
| 2 | [adv] difficult for us [verb] | 18 |
|
| 3 | [is] difficult for us [verb] | 17 |
|
| 4 | [is] [adv] difficult for us | 7 |
|
