| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [pers pn] [is] difficult to know | 8 |
|
| 2 | [coord] it [is] difficult know | 8 |
|
| 3 | [coord] [pers pn] is difficult know | 7 |
|
| 4 | and [pers pn] [is] difficult know | 6 |
|
