C312312111111331312111133133313121111133313113313223313331311332233223121   >>    C31231211111133131211113313331312111113331311331322331333131133223322312   <<    C312312111111331312111133133313121111133313113313223313331311332233223123   >>      C312312111111331312111133133313121111133313113313223313331311332233223122   >>