| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] difficult it be for | 29 |
|
| 2 | how difficult it be for | 25 |
|
| 3 | how difficult it be for | 25 |
|
| 4 | [Wh adv] difficult it be for | 25 |
|
| 5 | difficult it [vb mod] be for | 6 |
|
| 6 | difficult it [modal v] be for | 6 |
|
| 7 | difficult it be for [noun] | 13 |
|
| 8 | difficult it be for [pers pn] | 10 |
|
| 9 | difficult it be for [pron] | 10 |
|
| 10 | difficult it be for [noun pl] | 9 |
|
