| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it difficult for him [verb] | 15 |
|
| 2 | it [was/were] for him [verb] | 12 |
|
| 3 | [was/were] difficult for him [verb] | 6 |
|
| 4 | it [was/were] difficult for him | 6 |
|
