C11112331312111112111133133313331333133313132211312111133131211111322223311   >>    C1111233131211111211113313331333133313331313221131211113313121111132222331   <<    C11112331312111112111133133313331333133313132211312111133131211111322223313   >>      C11112331312111112111133133313331333133313132211312111133131211111322223312   >>