C3123121111113313121111331333133313223313331333133313331311331323123221   >>    C312312111111331312111133133313331322331333133313331333131133132312322   <<    C3123121111113313121111331333133313223313331333133313331311331323123223   >>      C3123121111113313121111331333133313223313331333133313331311331323123222   >>