C11112331312111112111133133313231333132322121111133313223133311331   >>    C1111233131211111211113313331323133313232212111113331322313331133   <<    C11112331312111112111133133313231333132322121111133313223133311333   >>      C11112331312111112111133133313231333132322121111133313223133311332   >>