/*
 * To change this template, choose Tools | Templates
 * 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.*;

import static java.lang.Math.*;

public class Main {

	BufferedReader in;
	StringTokenizer st;
	PrintWriter out;

	private String inFilename = "in.txt";
	private String outFilename = "out.txt";

	boolean can(int a, int b) {
		String s1 = String.valueOf(a);
		String s2 = String.valueOf(b);
		if (s1.length() != s2.length())
			return false;
		for (int i = 1; i < s1.length(); ++i) {
			String q = s1.substring(i) + s1.substring(0, i);
			if (q.equals(s2))
				return true;
		}
		return false;
	}

	void solve() throws IOException {
		int n = ni();
		for (int t = 1; t <= n; ++t) {
			int a = ni();
			int b = ni();
			int ret = 0;
			for (int i = a; i <= b; ++i)
				for (int j = i + 1; j <= b; ++j) {
					if (can(i, j))
						++ret;
				}
			out.println("Case #" + t + ": " + ret);
		}
	}

	public Main() throws IOException {
		Locale.setDefault(Locale.US);
		in = new BufferedReader(new FileReader(inFilename));
		out = new PrintWriter(outFilename);
		solve();
		in.close();
		out.close();
	}

	String ns() throws IOException {
		while (st == null || !st.hasMoreTokens())
			st = new StringTokenizer(in.readLine());
		return st.nextToken();
	}

	int ni() throws IOException {
		return Integer.valueOf(ns());
	}

	double nd() throws IOException {
		return Double.valueOf(ns());
	}

	long nl() throws IOException {
		return Long.valueOf(ns());
	}

	public static void main(String[] args) throws IOException {
		new Main();
	}
}
