import java.io.*;
import java.math.BigInteger;
import java.util.*;

import org.jfree.data.function.PowerFunction2D;

public class r2a
{

	Map numMap = new HashMap();
    int output = 0;

    /**
     * @param args
     */
    public static void main(String[] args)
    {
        r2a mk = new r2a();
        try {
            FileInputStream fstream = new FileInputStream("d:/cjinput.txt");
            DataInputStream in = new DataInputStream(fstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            String str;
            int i = 0;
            while ((str = br.readLine()) != null) {
            	int begin=0,end = 0;
                i++;
                if (i == 1)
                    continue;
                mk.numMap = new HashMap();
                StringTokenizer strTok = new StringTokenizer(str, " ");
                while (strTok.hasMoreTokens()) {
                	begin =  Integer.parseInt(((String) strTok.nextToken()));
                    end = Integer.parseInt(((String) strTok.nextToken()));
                }

                mk.evaluate(i, begin, end);

            }
            in.close();
        }
        catch (Exception e) {
            System.err.println(e);
        }

    }

    private void evaluate(int rowNum, int begin, int end)
    {
    	output=0;
    	for (int i = begin; i<= end; i++) {
    		if(numMap.containsKey(Integer.valueOf(i)))
    			continue;
    		List l = getPairElems(i);
    		if (l.size() > 0) {
    			Iterator itr = l.iterator();
    			int ctr = 0;
    			ArrayList tempList = new ArrayList();
    			while (itr.hasNext()) {
    				int next = ((Integer)itr.next()).intValue();
    				if (next <= end && next > i) {
    					numMap.put(Integer.valueOf(next), i);
    					tempList.add(next);
    					ctr++;
    				}
    			}
    			ctr = getCounter(ctr+1,2);
/*    			if (tempList.size() > 0 || ctr > 0)
    				System.out.println("DD: " + i + ": " + tempList +" ; ctr = " + ctr);*/
    			output = output + ctr;
    		}
    		
    	}

        String outputStr = "Case #" + (rowNum -1) + ": " + output;
        
        System.out.println(outputStr);
    }

	private int getCounter(int n, int r) {
		int ret = 1;
		int nfactorial =1;
		for (int i = 2; i<=n; i++) {
			nfactorial = i*nfactorial;
		}
		int nrfact =1;
		for (int i = 2; i<=n-r; i++) {
			nrfact = i*nrfact;
		}
		
		return nfactorial/(2*nrfact);
	}

	private ArrayList getPairElems(int num) {
		ArrayList retList = new ArrayList();
		int temp = num;
		if (num/10 == 0)
			return retList;
		
		String str = String.valueOf(num);
		
		int arr[] = new int[str.length()];
		int x = str.length();
		while (temp/10 > 0) {
			arr[x-1] = temp%10;
			temp=temp/10;
			x--;
		}
		arr[0]=temp;
		
		int size = arr.length;
		for (int pos = size -1; pos >0; pos--) {
			if(arr[pos] == 0)
				continue;
			int pairNum = 0;
			int multiplier =1;
			for (int c=0; c < size-1; c++) {
				multiplier = multiplier*10;
			}
			pairNum = pairNum + (arr[pos]*multiplier);
			for(int ctr = pos+1, i=1; i < size; i++,ctr++) {
				if (ctr == size)
					ctr=0;
				if (multiplier!=1)
					multiplier=multiplier/10;
				pairNum = pairNum + (arr[ctr]*multiplier);
			}
			if (pairNum != num)
				retList.add(Integer.valueOf(pairNum));			
		}
		
		return retList;
	}
}

import java.awt.Container;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;

import javax.swing.JFrame;
import javax.swing.JTextArea;


public class Recycling extends JFrame
{
	private final int WIDTH = 800;
	private final int HEIGHT = 400;
	private Container pane; 
	
	private int[] A;
	private int[] B;
	private int[] numberOfSolutions;
	
	private String[][] permutations;
	
	private int numberOfLines;
	private int lastI = 0;
	private int lastWorkingOnIt = 0;
	
	
	private JTextArea input, output;
	
	
	private Scanner scanner;
	private PrintWriter out, outDebug;
	
	
	public Recycling() throws IOException
	{
		pane = new Container();
		pane = getContentPane();
		
		scanner = new Scanner(new File("c:/users/Christopher/Desktop/input.in"));
		out = new PrintWriter(new FileWriter("c:/users/Christopher/Desktop/output.out")); 
		outDebug = new PrintWriter(new FileWriter("c:/users/Christopher/Desktop/debug.out")); 
		
		numberOfLines = Integer.parseInt(scanner.nextLine());
		
		A = new int[numberOfLines];
		B = new int[numberOfLines];
		numberOfSolutions = new int[numberOfLines];
		
		
		
		input = new JTextArea(100, numberOfLines);
		input.setSize(300,200);
		input.setLocation (10, 10);
		
		output = new JTextArea(120, numberOfLines);
		output.setSize(300,200);
		output.setLocation(410, 10);
		
		pane.setLayout(null);
		pane.add(input);
		pane.add(output);
		
		
		
		for (int i = 0; i < numberOfLines; i++)
		{
			A[i] = scanner.nextInt();
			B[i] = scanner.nextInt();
			
			numberOfSolutions[i] = findSolutions(i);
			
			//input.append(A[i] + " " + B[i] + "\n");
			//output.append("Case #" + (i + 1) + ": " + numberOfSolutions[i] + "\n");
			out.println("Case #" + (i + 1) + ": " + numberOfSolutions[i]);
		}
		
		
		
		System.out.println("I made it!");
		
		scanner.close();
		out.close();
		outDebug.close();
		
		setVisible(true);
		setSize(WIDTH, HEIGHT);
		setTitle("Recycling");
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		
	}
	
	public static void main(String args[]) throws IOException
	{
		Recycling awesome = new Recycling();
	}
	
	
	
	int findSolutions(int whichLine)
	{
		int difference = B[whichLine] - A[whichLine] + 1;
		permutations = new String[difference][];
		int workingOnIt;
		
		int numberOfDigits;
		int whichEntry;
		
		for (int i = A[whichLine]; i < B[whichLine] + 1; i++)
		{
			whichEntry = i - A[whichLine];
			numberOfDigits = (int)Math.floor(Math.log10((double)i)) + 1;
			permutations[i - (A[whichLine])] = new String[numberOfDigits];
			
			for (int j = 0; j < numberOfDigits; j++)
			{
				
				permutations[whichEntry][j] = rotator(Integer.toString(i), j);
				
				workingOnIt = Integer.parseInt(permutations[whichEntry][j]);
				
				if (workingOnIt > i && workingOnIt <= B[whichLine] && permutations[whichEntry][j].charAt(0) != '0' && (i != lastI || workingOnIt != lastWorkingOnIt))
				{
					numberOfSolutions[whichLine]++;
					lastI = i;
					lastWorkingOnIt = workingOnIt;
				}
			}
		}
		
		return numberOfSolutions[whichLine];
	}
	
	
	
	
	String rotator(String original, int numberOfTimes)
	{
		char[] originalChar = original.toCharArray();
		
		char temp; 
		
		for (int i = 0; i < numberOfTimes; i++)
		{
			temp = originalChar[0];
			
			for (int j = 1; j < originalChar.length; j++)
			{
				originalChar[j - 1] = originalChar[j];
			}
			
			originalChar[originalChar.length - 1] = temp;
		}
		
		String rotatedString = new String(originalChar);
		
		return rotatedString;
	}
}