C11112331312111112111133133313331333132322121111331312113313331323222212121   >>    C1111233131211111211113313331333133313232212111133131211331333132322221212   <<    C11112331312111112111133133313331333132322121111331312113313331323222212123   >>      C11112331312111112111133133313331333132322121111331312113313331323222212122   >>