| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [adj] [pron] is | 856 |
|
| 2 | how difficult [pron] [be] | 120 |
|
| 3 | how difficult [pron] be | 120 |
|
| 4 | [adv] difficult [pron] is | 109 |
|
| 5 | [Wh adv] difficult [pron] is | 82 |
|
| 6 | how difficult [pron] [is] | 81 |
|
| 7 | how difficult [pron] is | 80 |
|
