int main()
{
	int A,B,C;//????????
	int words[4];//??????????????
	int rank[4];//?????????????????
	for(A=1;A<=3;A++)
	{
		for(B=1;B<=3;B++)
		{
			if(A==B) continue;
			for(C=1;C<=3;C++)
			{
				if(B==C||A==C) continue;
				words[1]=(B>A)+(C==A);
				words[2]=(A>B)+(A>C);
				words[3]=(C>B)+(B>A);
				rank[A]=1;
				rank[B]=2;
				rank[C]=3;
				if(words[rank[1]]>words[rank[2]]&&words[rank[2]]>words[rank[3]])//??????????????
					cout<<(char)(rank[1]+64)<<(char)(rank[2]+64)<<(char)(rank[3]+64)<<endl;//????
			}
		}
	}
			return 0;
} 