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

import java.io.File;
import java.io.FileInputStream;
import java.util.Scanner;

/**
 *
 * @author imgps
 */
public class C {
    public static void main(String args[]) throws Exception{
        int A,B;
        int ctr = 0;
        int testCases;
        
        Scanner sc = new Scanner(new FileInputStream("C-small-attempt0.in "));
        testCases = sc.nextInt();
        int input[][] = new int[testCases][2];
        for(int i=0;i<testCases;i++)
        {
          //  System.out.print("Enter input A B: ");
            input[i][0] = sc.nextInt();
            input[i][1] = sc.nextInt();
            
        }
  

for(int k=0;k<testCases;k++){
      ctr = 0;
      A = input[k][0];
      B = input[k][1];
        for(int i = A;i<=B;i++){
            int num = i;
            int nMul = 1;
            int mul = 1; 
            int tnum = num/10;
            while(tnum > 0){
                mul = mul *10;
                tnum= tnum/10;
            }
            tnum = num;
            int n = 0;
            while(tnum > 0 && mul >= 10){
                nMul = nMul * 10;
                n = (num % nMul) * mul + (num / nMul);
                mul = mul / 10;
                tnum = tnum / 10;
                for(int m=num;m<=B;m++){
                    
                    if(n == m && m > num){
                        ctr++;
                    }
                }
                
                
                
         
            }
        }
        System.out.println("Case #"+(k+1)+": "+ctr);
        
    }
    }
}

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;


public class ProblemC {
	
	static Scanner kb = null;
	static FileWriter fw = null;
	
	public static void main(String [] args) {
		
		try {
			kb = new Scanner(new File("input.in"));
		} catch (FileNotFoundException e) {}
		
		
		
		
		int T = kb.nextInt();
		
		//int result = solve(1111, 2222);
		//System.out.println("Case #"+2+": "+result);
		
		
		FileWriter fstream = null;
		try {
			fstream = new FileWriter("output.txt");
		} catch (IOException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
		BufferedWriter out = new BufferedWriter(fstream);
		  
		for(int i=1; i<=T; i++) {
			int A = kb.nextInt();
			int B = kb.nextInt();
			
			int result = solve(A, B);
			
			try {
				out.append("Case #"+i+": "+result+"\n");
				//out.write("Case #"+i+": "+result);
			} catch (IOException e) {
				System.out.println("error "+e.getMessage() );
			}
			//System.out.println("Case #"+i+": "+result);
		}
		 try {
			out.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	
	public static int solve(int A, int B) { // 100 500
		
		int count = 0;
		for(int i=A; i<=B; i++) {
			
			String istr = i+""; // 100
			String icyc = istr + istr; // 100100
			
			int len = istr.length();
			
			//System.out.println("cyc: "+icyc);
			
			ArrayList<Integer> savedInts = new ArrayList<Integer>();
			
			savedInts.add(i);	
			
			for(int j=1; j<len; j++) {
				String recyc = icyc.substring(j, j+len);
				int recycInt = Integer.parseInt(recyc);
				
				//System.out.println("> "+recycInt);
				
				if(recycInt <= B && recycInt>=A && !savedInts.contains(recycInt)) {
					//System.out.println("*");
					savedInts.add(recycInt);
					count++;
				}
			}
		}
		
		return count/2;
	}
}
