C31231211111133131211113313331312111113331311331333132233132321133132313223121   >>    C3123121111113313121111331333131211111333131133133313223313232113313231322312   <<    C31231211111133131211113313331312111113331311331333132233132321133132313223123   >>      C31231211111133131211113313331312111113331311331333132233132321133132313223122   >>