/*
 * 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.io.*;
import java.util.*;

public class ProblemC {
	public static void main(String[] args) {
		/*
		try {
			System.setIn(new FileInputStream("c-example.in"));
		} catch (Exception e) {}
		*/
		new ProblemC();
	}
	
	public ProblemC() {
		Scanner input = new Scanner(System.in);
		int cases = input.nextInt();
		for (int n = 0; n < cases; n++) {
			int lower = input.nextInt();
			int upper = input.nextInt();
			System.out.println("Case #" + (n+1) + ": " + findPairs(lower, upper));
		}
	}
	
	private int findPairs(int lower, int upper) {
		List<Integer> pairs = new ArrayList<Integer>();
		for (int i = lower; i <= upper; i++) {
			List<Integer> p = recycle(i);
			for (int j : p) {
				if (j >= i && j <= upper) {
					pairs.add(j);
					//System.out.println(i + ", " + j);
				}
			}
		}
		return pairs.size();
	}
	
	private List<Integer> recycle(int n) {
		List<Integer> p = new ArrayList<Integer>();
		int m = n;
		int len = Integer.toString(n).length();
		int mult = (int)Math.pow(10, len - 1);
		for (int i = 0; i < len; i++) {
			int d = m % 10;
			m /= 10;
			m += (d * mult);
			if (m != n && len == Integer.toString(m).length() && !p.contains(m)) {
				p.add(m);
			}
		}
		return p;
	}
}
