C1111233131211111211113313331333133313232313331333131333131211113313232222131   >>    C111123313121111121111331333133313331323231333133313133313121111331323222213   <<    C1111233131211111211113313331333133313232313331333131333131211113313232222133   >>      C1111233131211111211113313331333133313232313331333131333131211113313232222132   >>