C11112331312111112111133133313331333132323133313331333133313121121131111   >>    C1111233131211111211113313331333133313232313331333133313331312112113111   <<    C11112331312111112111133133313331333132323133313331333133313121121131113   >>      C11112331312111112111133133313331333132323133313331333133313121121131112   >>