In case you're still trying to figure it out, but even if you're not, Nanaki does make for an anagram of Anakin and not just because of the letters. It also works as an anagram in Romaji since the order of the "k-i" doesn't change and the "a" and "n" are treat as stand-alone syllables. In other words "na"-"na"-"ki" becomes "a"-"na"-"ki"-"n".