C11112331312111112111133133313331333132322121111331312113213232331   >>    C1111233131211111211113313331333133313232212111133131211321323233   <<    C11112331312111112111133133313331333132322121111331312113213232333   >>      C11112331312111112111133133313331333132322121111331312113213232332   >>