C11112331312111112111133133313231333133313132121111331323133313232131   >>    C1111233131211111211113313331323133313331313212111133132313331323213   <<    C11112331312111112111133133313231333133313132121111331323133313232133   >>      C11112331312111112111133133313231333133313132121111331323133313232132   >>