C11112331312111112111133133313331333132323213331333132322331323122123231   >>    C1111233131211111211113313331333133313232321333133313232233132312212323   <<    C11112331312111112111133133313331333132323213331333132322331323122123233   >>      C11112331312111112111133133313331333132323213331333132322331323122123232   >>