Present, Future 芯が強い is [x] 芯が強くない is not [x] Past 芯が強かった was [x] 芯が強くなかった was not [x] Te-form, Continuative 芯が強くて is [x] and... 芯が強くなくて is not [x] and... Provisional 芯が強ければ if it is [x] 芯が強くなければ if it is not [x] Conditional 芯が強かったら when/if it is [x] 芯が強くなかったら when/if it is not [x] Adverbial 芯が強く [x]-ly Noun form 芯が強さ [x]-ness