C11112331312111112111133133313331333133313331333133313331333132211313331   >>    C1111233131211111211113313331333133313331333133313331333133313221131333   <<    C11112331312111112111133133313331333133313331333133313331333132211313333   >>      C11112331312111112111133133313331333133313331333133313331333132211313332   >>