C1111233131211111211113313331333133313331333133313331333133313222213331   >>    C111123313121111121111331333133313331333133313331333133313331322221333   <<    C1111233131211111211113313331333133313331333133313331333133313222213333   >>      C1111233131211111211113313331333133313331333133313331333133313222213332   >>