my friend, i am a russian native speaker and of course know the grammar. in fact i helped several members here with their russian idns on translations and keep/drop advice, plus even gave my little appraisal in terms of great/good/average/bad/drop. if someone else needs my help - just drop me a line, i'll help for free - but make sure your list is no more than 200 domains - i have a fulltime job too.
but thanks for the good point - you are right - one of the requirements is that the word must make a good sense as is, as i wrote previously. grammar is very important.