C31231211111133131211113313331333132233131211111211113312113313232213221   >>    C3123121111113313121111331333133313223313121111121111331211331323221322   <<    C31231211111133131211113313331333132233131211111211113312113313232213223   >>      C31231211111133131211113313331333132233131211111211113312113313232213222   >>