Present, Future 空高い is [x] 空高くない is not [x] Past 空高かった was [x] 空高くなかった was not [x] Te-form, Continuative 空高くて is [x] and... 空高くなくて is not [x] and... Provisional 空高ければ if it is [x] 空高くなければ if it is not [x] Conditional 空高かったら when/if it is [x] 空高くなかったら when/if it is not [x] Adverbial 空高く [x]-ly Noun form 空高さ [x]-ness