/*
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 * and open the template in the editor.
 */
package gcj;

import java.io.File;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Scanner;

/**
 *
 * @author daniele
 */
public class GCJ_C {
    
    public static void main(String[] args) throws Exception{
        
        
        
        Scanner in = new Scanner(new File(args[0]));
        FileWriter out = new FileWriter("/home/daniele/Scrivania/Output");
        

        int prove=in.nextInt();
        int min,max;
        int cifre;
        int cifreaus;
        String temp;
        int aus;
        int count=0;
        ArrayList<Integer> vals = new ArrayList<Integer>();
        int jcount=0;
        ArrayList<Integer> perm = new ArrayList<Integer>();
        
        out.write("");
        out.flush();
        
        for(int i=1;i<=prove;i++){
            
            out.append("Case #" +i+": ");out.flush();
            
            min=in.nextInt();
            max=in.nextInt();
            
            for(int j=min;j<=max;j++){
               if(!vals.contains(j)){
                    temp=""+j;
                    cifre=temp.length();
                    aus=j;
                    perm.add(j);
                    for(int k=1;k<cifre;k++){
                        aus=rotateOnce(aus);
                        temp=""+aus;
                        cifreaus=temp.length();//elusione zeri iniziali
                        if(aus>=min && aus<=max && aus!=j && cifreaus==cifre && nobody(vals,perm)){ 
                            perm.add(aus);
                            jcount ++;
                            
                        }
                        
                    }
                    while(jcount>0){count+=jcount; jcount--;}
                    vals.addAll(perm);
                    perm= new ArrayList<Integer>();
                    
                }
            }
            out.append(count+"\n");out.flush();
            count=0;
            vals= new ArrayList<Integer>();
        }
        
        
        
    }
        static public int rotateOnce(int n){
            String s=""+n;
            if(s.length()>1){
                s=s.charAt(s.length()-1) + s.substring(0,s.length()-1);
                n=Integer.parseInt(s);
            }
            return n;
        }    
        
        static public boolean nobody(ArrayList<Integer> v,ArrayList<Integer> a){;
            for(int i=0;i<a.size();i++)
                if(v.contains(a.get(i))) return false;
            return true;
        } 
    
}


import java.util.*;
import java.math.*;

public class C{

	public static int func(int x, int M){
		int tmp,d=0,i;
		
		int a[] = new int[10];
		d = 0;
		tmp = x;
		while(tmp > 0){
			a[d] = tmp % 10;
			tmp /= 10;
			d++;
		}
		
		int ten = 1;
		for(i=0;i<d-1;i++) ten *= 10;
		
		int y[] = new int[d];
		tmp = x;
		for(i=0;i<d;i++){
			y[i] = tmp;
			tmp = tmp / 10 + ten * a[i];
		}
		
		Arrays.sort(y);
		
		int ans = 0;
		for(i=0;i<d;i++) if(y[i] > x && y[i] <= M && (i == 0 || y[i] != y[i-1])) ans++;
		return ans;
	}

	public static void main(String args[]){
		int T,t,A,B,i;
		
		Scanner scan = new Scanner(System.in);
		
		T = scan.nextInt();
		
		for(t=0;t<T;t++){
			A = scan.nextInt();
			B = scan.nextInt();
			
			int ans = 0;
			for(i=A;i<=B;i++) ans += func(i,B);
			
			System.out.printf("Case #%d: %d\n", t+1, ans);
		}
	}

}
