C11112331312111112111133133313331333132322121111331323331123133323311   >>    C1111233131211111211113313331333133313232212111133132333112313332331   <<    C11112331312111112111133133313331333132322121111331323331123133323313   >>      C11112331312111112111133133313331333132322121111331323331123133323312   >>