int main()
{
	int a, b, c, i;
	for (a = 1; a <= 3; a++)
	{
		for (b = 1; b <= 3; b++)
		{
			if (a != b)
			{
				for (c = 1; c <= 3; c++)
				{
					if ((a != c) && (b != c))
					{
						if ((((b > a) + (a == c)) == 3 - a) && (((a > b) + (a > c)) == 3 - b)&&(((c > b) + (b > a)) == 3 - c))
						{
							for (i = 1; i<=3;i++)
							{
								if (a == i)
									cout << "A";
								if (b == i)
									cout << "B";
								if (c == i)
									cout << "C";
							}
							cout << endl;
						}					
					}			
				}
			}		
		}	
	}
	return 0;
}