C11112331312111112111133133313331333133112111113331311331323232311   >>    C1111233131211111211113313331333133313311211111333131133132323231   <<    C11112331312111112111133133313331333133112111113331311331323232313   >>      C11112331312111112111133133313331333133112111113331311331323232312   >>