public String correct(String x)
	{
		String ret = "";
		char[] prs = x.toCharArray();
		int cnt = 0;

		boolean flag;
		queueNode n;

		while(cnt<prs.length)
		{
			n = iHead;
			flag = false;

			while(n!=null&&!flag)
			{
				if(n.getData() == prs[cnt])
					flag = true;
				n = n.getNext();
			}

			if(!flag)
				ret = ret + prs[cnt];
			cnt++;
		}

		return ret;
	}