| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [adj] [pron] [is] for [noun pl] | 12 |
|
| 2 | how difficult [pron] [is] for [noun] | 8 |
|
| 3 | [adv] difficult [pron] [is] for [noun pl] | 7 |
|
| 4 | how difficult [pron] [be] for [noun pl] | 7 |
|
| 5 | how difficult [pron] [is] [prep] [noun pl] | 6 |
|
