No | Pattern | Freq | Relations |
---|---|---|---|
1 | [pers pn] know [Wh adv] difficult it is | 5 | |
2 | [pron] know [Wh adv] difficult it is | 5 | |
3 | know [Wh adv] difficult it is [prep] | 6 | |
4 | know [Wh adv] difficult it is [prep] | 6 | |
5 | know [Wh adv] difficult it is for | 5 | |
6 | know [Wh adv] difficult it is for | 5 |