C11112331312111112111133133313331333132322121111331323113121221   >>    C1111233131211111211113313331333133313232212111133132311312122   <<    C11112331312111112111133133313331333132322121111331323113121223   >>      C11112331312111112111133133313331333132322121111331323113121222   >>