| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [adj] [pers pn] [be] [verb] [prep] | 151 |
|
| 2 | [adv] difficult [pers pn] [be] [verb] [prep] | 13 |
|
| 3 | how difficult [pron] [be] [verb] [prep] | 11 |
|
