C3123121111113313121111331333132313331311331322313331333133313232223311221   >>    C312312111111331312111133133313231333131133132231333133313331323222331122   <<    C3123121111113313121111331333132313331311331322313331333133313232223311223   >>      C3123121111113313121111331333132313331311331322313331333133313232223311222   >>