C11112331312111112111133133313331311331323212331333132323221231   >>    C1111233131211111211113313331333131133132321233133313232322123   <<    C11112331312111112111133133313331311331323212331333132323221233   >>      C11112331312111112111133133313331311331323212331333132323221232   >>