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.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;


public class Main {

	/**
	 * @param args
	 */
	public static void main(String[] args) 
	{
		try
		{
			  // Open the file that is the first 
			  // command line parameter
			  FileInputStream fstream = new FileInputStream("C-small-attempt0.in");
			  // Get the object of DataInputStream
			  DataInputStream in = new DataInputStream(fstream);
			  BufferedReader br = new BufferedReader(new InputStreamReader(in));
			  String strLine;
			  //Read File Line By Line			
			  int cases = 0;
			  ArrayList<String> input = new ArrayList();
			  ArrayList<String> output = new ArrayList();
			  
			  while ((strLine = br.readLine()) != null)   
			  {
				  // Print the content on the console
				  input.add(strLine);
			  }
			  //Close the input stream
			  in.close();
			  
			  cases = Integer.parseInt(input.get(0));			  
			  
			  for(int i=0; i<cases; i++)
			  {
				  String[] numbers = input.get(1 + 1*i).split(" ");				  
				  int A = Integer.valueOf(numbers[0]);
				  int B = Integer.valueOf(numbers[1]);				  
				  
				  int number = 0;
				  
				  for (int k=B; k>=A; k--)
					  for (int j=A; j<=k; j++)
					  {
						  String strJ = String.valueOf(j);
						  String strK = String.valueOf(k);
												  
						  
						  if (strJ.length() == strK.length())
						  {							  
							  
							  String newJ = strJ.substring(strJ.length() - 1) + strJ.substring(0, strJ.length() -1);
							  
							  while(!newJ.equals(strJ))
							  {								 
								  if (newJ.equals(strK))
									  number++;  
								  
								  newJ = newJ.substring(newJ.length() - 1) + newJ.substring(0, newJ.length() -1);
							  }
								  
						  }
					  }
				  
				  output.add("Case #" + (i + 1) + ": " + number);
			  }
			  
			  for (int i=0; i<output.size(); i++)
				  System.out.print(output.get(i) + "\n");
			  
		}
		catch (Exception e)
		{
			//Catch exception if any
			System.err.println("Error: " + e.getMessage() + " " + e.getClass());
		}

	}

}
