import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

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

import java.io.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.*;
/**
 *
 * @author usuario
 */
public class CodejamC {

    /**
     * @param args the command line arguments
     */
    public static int fun(int a,int b,int i){
      int cont=0,n=0,mod,res=i;
      boolean flag;
      String num=i+"";
      String aux;
      int tmp;
      tmp=num.length();
      while(n<tmp-1){
        flag=false;  
        n++;
        if(res<Math.pow(10,tmp-1))
         flag=true;
        mod=res%10;
        num=""+res;
        if(flag){
             num="0"+res;
        }    
        aux=""+mod;
        aux+=num.substring(0,num.length()-1);
        res=Integer.parseInt(aux);
        
        if(res>i && res<= b){
          cont++;
        }  
       }
      return cont;
    }
    public static void main(String[] args){ 
        int n,a,b,cont=0;
        try {
            System.setIn(new FileInputStream("file.in"));
        } catch (FileNotFoundException ex) {
            Logger.getLogger(CodejamC.class.getName()).log(Level.SEVERE, null, ex);
        }
        Scanner reader=new Scanner(System.in);
        n=reader.nextInt(); 
        for(int i=0;i<n;i++){
          cont=0;  
          a=reader.nextInt();
          b=reader.nextInt();
          for(int j=a;j<=b;j++){
            cont+=fun(a,b,j);  
          }
          System.out.println("Case #"+(i+1)+": "+ cont);
        }
      
    }
}
