C11112331312111112111133133313331333133112111113331333133313331333132322211221   >>    C1111233131211111211113313331333133313311211111333133313331333133313232221122   <<    C11112331312111112111133133313331333133112111113331333133313331333132322211223   >>      C11112331312111112111133133313331333133112111113331333133313331333132322211222   >>