| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [is] [adv] difficult for | 122 |
|
| 2 | that [pron] [is] [adv] difficult | 84 |
|
| 3 | that [pron] [is] difficult for | 18 |
|
| 4 | that [pron] [is] [adv] for | 18 |
|
