~나, ~든지... how are they different? 누구나, 누구든지 어디나, 어디든지 언제나, 언제든지 Whoever, wherever, whenever, etc. Are they different from each other? Also, how do I say "whatever" and "however"? For example: "Whatever you do, do it well." "However you do it, do it well." I've tried looking these words up in Naver dictionary and got some different results. I'm wondering if "~나" or "~든지" applies to these words as well. Thank you!!