/**
* @file 1000010424_4.cpp
* @author ???
* @date 2010?11?17
* @description
* ??????:???
*/



int main()
{
	int rice[3];						//???-1?0?1??????; 1???
	char name[3] = {'A', 'B', 'C'};		//????????
	int right[3];						//???????right[i]+rice[i]==1?
	int i;

	for(rice[0] = -1; rice[0] <= 1; rice[0]++)
		for(rice[1] = -1; rice[1] <= 1; rice[1]++)
			if(rice[1] != rice[0])
				for(rice[2] = -1; rice[2] <= 1; rice[2]++)
					if(rice[2] != rice[1] && rice[2] != rice[0])
					{
						right[0] = (rice[1] > rice[0]) + (rice[2] == rice[0]);
						right[1] = (rice[0] > rice[1]) + (rice[0] > rice[2]);
						right[2] = (rice[2] > rice[1]) + (rice[1] > rice[0]);

						if((rice[0] + right[0]) == 1 && (rice[1] + right[1]) == 1 && (rice[2] + right[2]) == 1)
						{
							for(i = 0; rice[i] != -1; i++)
								;
							cout << name[i];	//?????

							for(i = 0; rice[i] != 0; i++)
								;
							cout << name[i];	

							for(i = 0; rice[i] != 1; i++)
								;
							cout << name[i];	//?????
		
							cout << endl;
						}
					}
	
	return 0;
}