C11112331312111112111133133313331333133313123313331333233313233221   >>    C1111233131211111211113313331333133313331312331333133323331323322   <<    C11112331312111112111133133313331333133313123313331333233313233223   >>      C11112331312111112111133133313331333133313123313331333233313233222   >>