| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] can be [adv] [prep] | 56 |
|
| 2 | [pron] can be [adv] difficult | 52 |
|
| 3 | can be [adv] difficult [prep] | 15 |
|
| 4 | [pron] can be difficult [prep] | 7 |
|
