C11112331312111112111133133313331333132322121111331121311211331333113311   >>    C1111233131211111211113313331333133313232212111133112131121133133311331   <<    C11112331312111112111133133313331333132322121111331121311211331333113313   >>      C11112331312111112111133133313331333132322121111331121311211331333113312   >>