C11112331312111112111133133313331333132323213331333133112321211   >>    C1111233131211111211113313331333133313232321333133313311232121   <<    C11112331312111112111133133313331333132323213331333133112321213   >>      C11112331312111112111133133313331333132323213331333133112321212   >>