| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [vb past] [pers pn] [adv] difficult | 11 |
|
| 2 | i [vb past] [pers pn] [adv] difficult | 11 |
|
| 3 | i [vb past] [pers pn] very difficult | 8 |
|
| 4 | i [vb past] [pers pn] very difficult | 8 |
|
| 5 | i [vb past] [pers pn] difficult [to-vb] | 16 |
|
| 6 | i [vb past] [pers pn] difficult [verb] | 16 |
|
