C31231211111133131211113313331333133313332231131211111333132322333221   >>    C3123121111113313121111331333133313331333223113121111133313232233322   <<    C31231211111133131211113313331333133313332231131211111333132322333223   >>      C31231211111133131211113313331333133313332231131211111333132322333222   >>