| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [vb past] it difficult | 39 |
|
| 2 | [adv] found [pers pn] difficult | 35 |
|
| 3 | still [vb past] [pers pn] difficult | 9 |
|
| 4 | also [vb past] [pers pn] difficult | 5 |
|
| 5 | often [vb past] [pers pn] difficult | 5 |
|
| 6 | sometimes [vb past] [pers pn] difficult | 5 |
|
