C1111233131211111211113313331333133313232321333133313331312331311331211   >>    C111123313121111121111331333133313331323232133313331333131233131133121   <<    C1111233131211111211113313331333133313232321333133313331312331311331213   >>      C1111233131211111211113313331333133313232321333133313331312331311331212   >>