C11112331333132311331333133313331333132313121111113313232223321321   >>    C1111233133313231133133313331333133313231312111111331323222332132   <<    C11112331333132311331333133313331333132313121111113313232223321323   >>      C11112331333132311331333133313331333132313121111113313232223321322   >>