齿病
<><>>> <>..............()> <><>>> <>......().> <>.....()> <><>>> <>....().....> <>.......()........()> <><>>> <>.......()....()> <><>>> <>....> <><>>> <>......()> <><>>> <>..、、、、、......> <>..............、..、、..、、、...> <><>【:】>> <>............> <><>【:】>> <>......... ....> <><>>> <> .> <> () () ()> <> .> <>()> <> ...> <> () ()> <>..> <> ..> <> () () () () () () ()> <>...> <> ..> <> .、、..> <> .> <> ..> <> ...> <> () () ()> <>.> <> .> <> () () () () ()> <>....、、.....> <>.> <> ..、、...、、、......、..> <>.、.、....>