C11112331312111112111133133313331333132323213331333133323312213221   >>    C1111233131211111211113313331333133313232321333133313332331221322   <<    C11112331312111112111133133313331333132323213331333133323312213223   >>      C11112331312111112111133133313331333132323213331333133323312213222   >>