C11112331312111112111133133313331312111111322331333133313233121   >>    C1111233131211111211113313331333131211111132233133313331323312   <<    C11112331312111112111133133313331312111111322331333133313233123   >>      C11112331312111112111133133313331312111111322331333133313233122   >>