| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [vb past] it [adv] difficult [verb] | 8 |
|
| 2 | i [vb past] it [adv] difficult [verb] | 8 |
|
| 3 | i [vb past] it very difficult [verb] | 6 |
|
| 4 | i [vb past] it very difficult [verb] | 6 |
|
