C11112331312111112111133133313331333133313123313331331122332221   >>    C1111233131211111211113313331333133313331312331333133112233222   <<    C11112331312111112111133133313331333133313123313331331122332223   >>      C11112331312111112111133133313331333133313123313331331122332222   >>