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;
	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package gcj_c;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.StringTokenizer;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author kay
 */
public class Arrange {

    private int first;
    private int last;
    private BufferedReader reader;
    private StringTokenizer token;

    public void do_processing(String filename) {
        String current_line;
        int no_of_cases;
        try {
            reader = new BufferedReader(new FileReader(filename));
            FileWriter fstream = new FileWriter("G:/cl_out.txt");
            BufferedWriter out = new BufferedWriter(fstream);
            no_of_cases = Integer.parseInt(reader.readLine());

            for (int i = 1; i <= no_of_cases; i++) {
                current_line = reader.readLine();
                out.write("Case #" + i + ": ");
                out.write(String.valueOf(do_arrange(current_line)));
                //out.write(String.valueOf(3));
                //System.out.println("outputttttttttttttttt " + do_arrange(current_line));
                out.newLine();
                //Close the output stream
            }
            out.close();
            reader.close();
        } catch (Exception ex) {
            Logger.getLogger(Arrange.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public int do_arrange(String line) {
        int output = 0, temp,temp2, tens = 1, no_of_digits = 0, new_num = 0, mod = 1, add_tens = 1;
        token = new StringTokenizer(line);
        first = Integer.parseInt(token.nextToken());
        last = Integer.parseInt(token.nextToken());
        System.out.println(first + "" +last);
        temp = first;
        while (temp > 0) {
            temp /= 10;
            no_of_digits++;
        }
        
        if (no_of_digits == 1) {
            output = 0;
        } else {
           
            for (int i = first; i <= last; i++){
                temp = i;
                tens = 1;
                add_tens = 1;
                
                for (int j = 1; j < no_of_digits; j++){
                    add_tens = 1;
                    temp = i;
                    temp2 = i;
                    temp2 /= (tens * 10);
                    temp %= (tens * 10);
                    //System.out.println(temp);
                    for (int k=1; k<=(no_of_digits - j); k++){
                        add_tens *= 10;
                    }
                    //System.out.println("add tens" + add_tens);
                    tens *=10;
                    
                    new_num = (temp * add_tens) + temp2;
                    //System.out.println("newwwwwwwww " + new_num);
                    
                    //System.out.println("iiiiiiii "+ i);
                    if((new_num >= first) && (new_num > i) && (new_num <= last)){
                     //System.out.println("adddedd outtput");
                     output++;
                     
                 }
                }
                
                 
                
            }
        }
        System.out.println("output   " + output);
        return output;
    }
}
