C11112331312111112111133133313331333132323133313113313232112323221121   >>    C1111233131211111211113313331333133313232313331311331323211232322112   <<    C11112331312111112111133133313331333132323133313113313232112323221123   >>      C11112331312111112111133133313331333132323133313113313232112323221122   >>