private static char ConvertToLetter(int num)
	{
		char letter = 'A';
		
		switch(num)
		{
			case 1:
				letter = 'B';
				break;
			case 2:
				letter = 'C';
				break;
			case 3:
				letter = 'D';
				break;
			case 4:
				letter = 'E';
				break;
			case 5:
				letter = 'F';
				break;
			case 6:
				letter = 'G';
				break;
			case 7:
				letter = 'H';
				break;
			case 8:
				letter = 'I';
				break;
			case 9:
				letter = 'J';
				break;
		}
		
		return letter;
	}