C111112111133131121133133313331333133311221123121111331323223211113313232212131   >>    C11111211113313112113313331333133313331122112312111133132322321111331323221213   <<    C111112111133131121133133313331333133311221123121111331323223211113313232212133   >>      C111112111133131121133133313331333133311221123121111331323223211113313232212132   >>