C11112331312111112111133133313231333132313232113313231333132212322311   >>    C1111233131211111211113313331323133313231323211331323133313221232231   <<    C11112331312111112111133133313231333132313232113313231333132212322313   >>      C11112331312111112111133133313231333132313232113313231333132212322312   >>