| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [adj] [pron] is [prep] | 161 |
|
| 2 | how difficult [pron] [be] [prep] | 31 |
|
| 3 | how difficult [pron] be [prep] | 31 |
|
| 4 | [adv] difficult [pron] is [prep] | 24 |
|
| 5 | how difficult [pron] [is] [prep] | 21 |
|
