C11112331312111112111133133313331333132323213331333131211332221   >>    C1111233131211111211113313331333133313232321333133313121133222   <<    C11112331312111112111133133313331333132323213331333131211332223   >>      C11112331312111112111133133313331333132323213331333131211332222   >>