/*
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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.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Scanner;

public class C
{
    Scanner in;
    PrintWriter out;
    PrintStream err;
    
    private boolean recycled(int x, int y) {
    	String s1 = Integer.toString(x);
    	String s2 = Integer.toString(y);
    	if (s1.length() != s2.length())
    		return false;
    	for (int i = 0; i < s1.length(); ++i)
    		if (s1.equals(s2.substring(i) + s2.substring(0, i)))
    			return true;
    	return false;
    }
 
    private void run() throws Exception
    {
    	//in  = new Scanner(System.in);
    	//out = new PrintWriter(System.out);
        //in = new Scanner(new FileInputStream(		new File("input")));
        in = new Scanner(new FileInputStream(		new File("C-small-attempt0.in")));
        //in = new Scanner(new FileInputStream(		new File("X-large.in")));
        out = new PrintWriter(new FileOutputStream(	new File("output")));
        err = System.out;

        int testCases = in.nextInt();

        for (int test = 1; test <= testCases; ++test) {
        	int a = in.nextInt();
        	int b = in.nextInt();
        	int result = 0;
        	for (int i = a; i <= b; ++i)
        		for (int j = i+1; j <= b; ++j)
        			if (recycled(i, j))
        				result++;
        	out.println("Case #" + test + ": " + result);
        }
        out.close();
    }

    public static void main(String[] args) throws Exception
    {
        new C().run();
    }
}