C11112331312111112111133133313331333132322121111331323112331312131   >>    C1111233131211111211113313331333133313232212111133132311233131213   <<    C11112331312111112111133133313331333132322121111331323112331312133   >>      C11112331312111112111133133313331333132322121111331323112331312132   >>