C11112331312111112111133133313331333132323213331333131213332221   >>    C1111233131211111211113313331333133313232321333133313121333222   <<    C11112331312111112111133133313331333132323213331333131213332223   >>      C11112331312111112111133133313331333132323213331333131213332222   >>