C11112331312111112111133133313331333133313331322133313331333133313123123233221   >>    C1111233131211111211113313331333133313331333132213331333133313331312312323322   <<    C11112331312111112111133133313331333133313331322133313331333133313123123233223   >>      C11112331312111112111133133313331333133313331322133313331333133313123123233222   >>