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

/**
 * @author Anil Kishore, India
 */

public class Qual_C
{
    static int get(int x, int A, int B)
    {
        int r = 0;
        String s =""+x;
        HashSet<Integer> set = new HashSet<Integer>();
        for(int i=1;i<s.length();i++)
            if(s.charAt(i)!='0')
            {
                String ss = s.substring(i) + s.substring(0, i);
                int y = Integer.parseInt(ss);
                if(A<=y && x<y && y<=B) set.add(y);
            }
        return set.size();
    }

    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        for(int kase = 1, kases = sc.nextInt(); kase <= kases; kase++)
        {
            int A = sc.nextInt(), B = sc.nextInt();
            int ans = 0;
            for(int i=A;i<=B;i++) ans += get(i,A,B);
            System.out.println("Case #"+kase+": "+ans);
        }
    }
}
