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