| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [vb past] [pers pn] [adv] difficult [verb] | 9 |
|
| 2 | i [vb past] [pers pn] [adv] difficult [verb] | 9 |
|
| 3 | i [vb past] [pers pn] very difficult [verb] | 6 |
|
| 4 | i [vb past] [pers pn] very difficult [verb] | 6 |
|
