C31231211111133131211113313331312111113331311331333132233132321133132313221   >>    C3123121111113313121111331333131211111333131133133313223313232113313231322   <<    C31231211111133131211113313331312111113331311331333132233132321133132313223   >>      C31231211111133131211113313331312111113331311331333132233132321133132313222   >>