/*
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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.io.*;

public class recycled {

	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(new File("input"));
		int size = sc.nextInt();

		for (int x = 0; x < size; x++) {
			TreeSet<String> set = new TreeSet<String>();
			TreeSet<String> set1 = new TreeSet<String>();
			int A = sc.nextInt();
			int B = sc.nextInt();
			int comb = 0;
			
			for (int w = A; w <= B; w++) {
				String str = w + "";

				if (str.length() >= 2 && good(str)) {
					//System.out.println(str);
					for (int y = 1; y < str.length(); y++) {
						int cons = Integer.parseInt(str.substring(y, str
								.length())
								+ str.substring(0, y));

						if (cons <= B && cons>=w) {
				
							comb++;
							set.add(str + " " + str.substring(y, str
									.length())
									+ str.substring(0, y));
						}
					}
				}
			}
			
			int comp = 0;
		
			for (int y = A; y <= B; y++)
				for (int z = y + 1; z <= B; z++) {
					boolean good = false;
					String yy = y + "";
					String zz = z + "";
					for (int k = 1; k < zz.length(); k++) {
						String cons = (zz
								.substring(k, zz.length())
								+ zz.substring(0, k));
						if ((cons + "").equals(yy)) {
							comp++;
							set1.add(yy + " " + zz);
							break;
						}
					}
				}
//			System.out.println(set);
//			set1.removeAll(set);
//			System.out.println(set1);
//			System.out.println(comb);
			System.out.println("Case #"+(x+1)+": "+comp);
		}

	}

	public static boolean good(String str) {
		int temp=str.charAt(0);
		for (int x = 1; x < str.length() - 1; x++)
			if (str.charAt(x)=='0')temp=0;
			else if(str.charAt(x)<temp)return false;
			else temp=str.charAt(x);
			
		if(str.length()==2 && str.charAt(0)==str.charAt(1))return false;
		return true;
	}
}
