C11112331312111112111133133313331311331323212331333131133132323132313232311   >>    C1111233131211111211113313331333131133132321233133313113313232313231323231   <<    C11112331312111112111133133313331311331323212331333131133132323132313232313   >>      C11112331312111112111133133313331311331323212331333131133132323132313232312   >>