[HoroTheWise]

For skill 2-1, when you use it, it doesn't necessary end your combo. I tried in practice field aa>>as 2-1 than after 2 hit i used 1-1. It worked. You might miss a slash from 1-1 though. Also 1-3 works with 2-1 after 2 hits. 1-4 also works after 2 hits.