C1111233131211111211113313331333133313232313331333133313232123123231   >>    C111123313121111121111331333133313331323231333133313331323212312323   <<    C1111233131211111211113313331333133313232313331333133313232123123233   >>      C1111233131211111211113313331333133313232313331333133313232123123232   >>