C1111233131211111211113313331333133313232313331333131133132233111   >>    C111123313121111121111331333133313331323231333133313113313223311   <<    C1111233131211111211113313331333133313232313331333131133132233113   >>      C1111233131211111211113313331333133313232313331333131133132233112   >>