private static String findDigits(String str)
	{
		String answer = "NONE";
		boolean hasFound = false;
		for(int i = 0; i < str.length(); i++)
		{
			if((str.charAt(i) >= 'a' && str.charAt(i) <= 'j'))
			{
				if(!hasFound)
				{
					answer = "";
					hasFound = true;
				}
				answer += str.charAt(i) - 'a';
			}
			else if(Character.isDigit(str.charAt(i)))
			{
				if(!hasFound)
				{
					answer = "";
					hasFound = true;
				}
				answer+= str.charAt(i);
			}
		}
		
		return answer;		
	}