/*
 * 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.*;
import java.util.*;

public class GoogleQual2012C
{   public static void main(String[] args) throws Throwable
    {   new GoogleQual2012C();
    }
    
    public GoogleQual2012C() throws Throwable
    {   Scanner in = new Scanner(new File("C-small-attempt0.in"));
        PrintWriter out = new PrintWriter(new FileWriter("C-small-attempt0.out"));
        int numTests = in.nextInt();
        for (int i = 0; i < numTests; i++)
        {   int a = in.nextInt();
            int b = in.nextInt();
            int total = 0;
            for (int curr = a; curr < b; curr++)
            {   int numDigits = this.numDigits(curr);
                int[] alreadySeen = new int[numDigits - 1];
                for (int numToTake = 1; numToTake < numDigits; numToTake++)
                {   int recycled = this.moveDigits(curr, numToTake);
                    if (recycled > curr && recycled <= b && !this.contains(alreadySeen, recycled))
                    {   total++;
                        alreadySeen[numToTake - 1] = recycled;
                    }
                }
            }
            out.println("Case #" + (i + 1) + ": " + total);
        }
        out.close();
    }
    
    private int numDigits(int n)
    {   int toRet = 1;
        while (n >= 10)
        {   n /= 10;
            toRet++;
        }
        return toRet;
    }
    
    private int moveDigits(int num, int numToTake)
    {   int exp = this.numDigits(num) - numToTake;
        int base = 1;
        for (int i = 0; i < numToTake; i++)
        {   base *= 10;
        }
        int otherBase = 1;
        for (int i = 0; i < exp; i++)
        {   otherBase *= 10;
        }
        return (num / base) + (num % base) * otherBase;
    }
    
    private boolean contains(int[] array, int value)
    {   for (int i = 0; i < array.length; i++)
        {   if (array[i] == value)
            {   return true;
            }
        }
        return false;
    }
}