C11112331312111112111133133313331333132323213311211111333132231221   >>    C1111233131211111211113313331333133313232321331121111133313223122   <<    C11112331312111112111133133313331333132323213311211111333132231223   >>      C11112331312111112111133133313331333132323213311211111333132231222   >>