C1111233131211111211113313331333133313331312331333132323213331211   >>    C111123313121111121111331333133313331333131233133313232321333121   <<    C1111233131211111211113313331333133313331312331333132323213331213   >>      C1111233131211111211113313331333133313331312331333132323213331212   >>