/*
 * 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.*;
import java.io.*;
import java.lang.*;
import static java.lang.System.*;

public class RecycledNumbers{
	static HashSet<Integer> set;
	static int ctr, low, high;
	public static void main(String[] args) throws Exception{
		BufferedReader br = new BufferedReader(new InputStreamReader(in));
		int ii = Integer.parseInt(br.readLine());
		for(int jj=0; jj<ii; jj++){
			String[] ss = br.readLine().trim().split("\\s+");
			low = Integer.parseInt(ss[0]);
			high = Integer.parseInt(ss[1]);
			set = new HashSet<Integer>();
			ctr = 0;
			for(int i=low; i<=high; i++){
				if(!set.contains(i)){
					generate(i+"");
				}
			}
			out.printf("Case #%d: %d\n", jj+1, ctr);
		}
	}
	static void generate(String s){
		String ss = s+s;
		int tmp = 0;
		for(int i=0; i<s.length(); i++){
			int x = Integer.parseInt(ss.substring(i, i+s.length()));
			if(x>=low && x<=high && !set.contains(x)){
				// out.println(x);
				set.add(x);
				tmp++;
			}
		}
		// out.println();
		ctr+=(tmp*(tmp-1)/2);
	}
}