/*
 * 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.util.ArrayList;
import java.util.Scanner;


public class Prob3 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		// TODO Auto-generated method stub
		Scanner scan = new Scanner(System.in);
		
		int num = scan.nextInt();
		scan.nextLine();
		for(int i=0;i<num;i++){
			System.out.println("Case #" + (i+1) + ": " + eval(scan));
			scan.nextLine();
		}
	}
	
	private static int eval(Scanner scan){
		int A = scan.nextInt();
		int B = scan.nextInt();
		int sum = 0;
		
		for(int i=A;i<=B;i++){
			sum += pairsFor(i, A, B);
		}
		
		return sum;
	}
	
	private static int pairsFor(int n, int A, int B){
		int res = 0;
		int length = ("" + n).length() - 1;
		int mod;
		int m = n;
		//System.out.println("n: " + m);
		
		ArrayList<Integer> d = new ArrayList<Integer>(length);
		
		for(int i=0;i<length;i++){
			mod = m%10;
			m = (int)Math.floor(m/10.0) + mod*(int)Math.pow(10, length);
		
			//System.out.println("o: " + m);
			if(m > n && m <= B && m >= A && mod != 0 && !d.contains(m)){
				//System.out.println("n: " + n + " m: " + m);
				d.add(m);
				res++;
			}
		}
		
		return res;
	}

}
