C111112111133131121133133313331323133313221131211113313232211312233231   >>    C11111211113313112113313331333132313331322113121111331323221131223323   <<    C111112111133131121133133313331323133313221131211113313232211312233233   >>      C111112111133131121133133313331323133313221131211113313232211312233232   >>