C11112331312111112111133133313331333132323213331333131211331323213121   >>    C1111233131211111211113313331333133313232321333133313121133132321312   <<    C11112331312111112111133133313331333132323213331333131211331323213123   >>      C11112331312111112111133133313331333132323213331333131211331323213122   >>