| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] difficult it be for | 29 |
|
| 2 | [adv] difficult [pers pn] be for | 29 |
|
| 3 | [adv] difficult [pron] be for | 29 |
|
| 4 | [adv] difficult it be for | 29 |
|
| 5 | how difficult [pron] be for | 25 |
|
| 6 | [Wh adv] difficult [pron] be for | 25 |
|
| 7 | how difficult [pron] be for | 25 |
|
| 8 | [adv] difficult [pron] is for | 20 |
|
| 9 | [adv] difficult [pron] was for | 9 |
|
