| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [was/were] difficult [prep] | 80 |
|
| 2 | it [was/were] [prep] he | 65 |
|
| 3 | it difficult [prep] he | 17 |
|
| 4 | [was/were] difficult [prep] he | 7 |
|
