Has anyone looked at how much the entropy of Diceware phrases is degraded by modifying the result of dice throwing? That is, if someone decides not to use a word because it is obscure, or if the words are rearranged to make them more memorable? I'm guess that doing anything other than throwing the dice and using the indicated words is introducing an element of human cognition (and hence, predictability). I know if I were working on cracking Diceware passphrases those would be among the first rules I'd build in, assuming that most people can't be bothered to use words they don't know, and to put verbs after nouns etc. Have I got this right?