Present, Future 故無い is [x] 故無くない is not [x] Past 故無かった was [x] 故無くなかった was not [x] Te-form, Continuative 故無くて is [x] and... 故無くなくて is not [x] and... Provisional 故無ければ if it is [x] 故無くなければ if it is not [x] Conditional 故無かったら when/if it is [x] 故無くなかったら when/if it is not [x] Adverbial 故無く [x]-ly Noun form 故無さ [x]-ness