import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Q3M {
	public static void main(String[] args) throws Exception {
		compute();
	}

	private static void compute() throws Exception {
		BufferedReader br = new BufferedReader(new FileReader(new File(
				"C:\\work\\Q3\\C-small-attempt0.in")));
		String line = null;
		int i = Integer.parseInt(br.readLine());
		List l = new ArrayList();
		for (int j = 0; j < i; j++) {
			line = br.readLine();
			String[] nums = line.split(" ");
			l.add(calculate(nums));
		}
		writeOutput(l);
	}

	private static int calculate(String[] nums) {
		int min = Integer.parseInt(nums[0]);
		int max = Integer.parseInt(nums[1]);
		int count = 0;
		List l = new ArrayList();
		for (int i = min; i <= max; i++) {
			for (int times = 1; times < countDigits(i); times++) {
				int res = shiftNum(i, times);
				if (res <= max && i < res) {
					if ((!l.contains((i + ":" + res)))) {
						l.add(i + ":" + res);
						l.add(res + ":" + i);
						count++;
					}
				}
			}
		}
		return count;
	}

	private static boolean checkZeros(int temp, int res) {
		if (temp % 10 == 0 || res % 10 == 0)
			return false;
		return true;
	}

	private static int shiftNum(int n, int times) {
		int base = (int) Math.pow(10, times);
		int temp2 = n / base;
		int placeHolder = (int) Math.pow((double) 10,
				(double) countDigits(temp2));
		int res = placeHolder * (n % base) + temp2;
		if (countDigits(res) == countDigits(n)) {
			return res;
		} else {
			return 2000001;
		}
	}

	public static int countDigits(int x) {
		if (x < 10)
			return 1;
		else {
			return 1 + countDigits(x / 10);
		}
	}

	private static void writeOutput(List l) throws Exception {
		StringBuffer b = new StringBuffer();
		int i = 1;
		BufferedWriter br = new BufferedWriter(new FileWriter(new File(
				"C:\\work\\Q3\\ans.txt")));
		for (Iterator iterator = l.iterator(); iterator.hasNext();) {
			br.write("Case #" + i++ + ": " + iterator.next());
			br.newLine();
		}
		br.close();
	}

}
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;

public class RecycledPairs 
{
	static String line="Code Jam";
	static int noOfTCs;
	static long lowerLimit,upperLimit;
	static ArrayList<String> pairs = new ArrayList<String>();
	
	public static void main(String[] args)
	{
		//initialize();
		calculate();
		//generateOPFile();
	}
	
	private static void calculate() 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("C:/CodeJam/C-small-attempt2.in"));
			FileWriter fw = new FileWriter("C:/CodeJam/output.txt");
			BufferedWriter bw = new BufferedWriter(fw);
			line = br.readLine().trim();
			noOfTCs = Integer.parseInt(line);
			for(int testCase=0;testCase<noOfTCs;testCase++)
			{
				line = br.readLine().trim();
				String[] limits = line.split(" ");
				lowerLimit = Long.parseLong(limits[0]);
				upperLimit = Long.parseLong(limits[1]);
				for(long n = lowerLimit; n<upperLimit; n++)
				{
					StringBuffer nsb = new StringBuffer(""+n);
					//System.out.println(nsb.toString());
					for(int length = 1; length < nsb.length();length++)
					{
						StringBuffer msb = new StringBuffer(nsb.substring(length, nsb.length())+nsb.substring(0, length));
						//System.out.println(msb.toString());
						if(msb.charAt(0)=='0')
							continue;
						long m = Long.parseLong(msb.toString());
						if(n<m && m <=upperLimit)
						{
							String s = nsb.toString()+","+msb.toString();
							//System.out.println(s);
							if(!pairs.contains(s))
								pairs.add(s);
						}
					}
				}
				line = "Case #"+(testCase+1)+": "+pairs.size();
				pairs.clear();
				bw.write(line);
				bw.newLine();
			}
			br.close();
			bw.close();
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}
	
	/*static void generateOPFile()
	{
		try
		{
			FileWriter fw = new FileWriter("C:/CodeJam/output.txt");
			BufferedWriter bw = new BufferedWriter(fw);
			for(int i=1;i<=noOfTCs;i++)
			{
				line = "Case #"+i+": "+1;
				bw.write(line);
				bw.newLine();
			}			
			bw.close();
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}*/

	/*static void initialize()
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("C:/CodeJam/C-small.in"));
			line = br.readLine().trim();
			noOfTCs = Integer.parseInt(line);
			br.close();
			
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}*/
}
