import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package javaapplication1;

import java.io.FileNotFoundException;
import java.util.Scanner;
import java.io.File;

/**
 *
 * @author kutub
 */
public class rn {
    public static void main(String args[]) throws FileNotFoundException
    {
        File f=new File("C:/Users/kutub/Documents/NetBeansProjects/JavaApplication1/src/javaapplication1/input3.txt");
        Scanner s=new Scanner(f);
        int n=0,a=0,b=0,count=0;
        while(s.hasNext())
        {
            n=s.nextInt();
            
            for(int i=1;i<=n;i++)
            {
                s.nextLine();
                a=s.nextInt();
                b=s.nextInt();
                count=0;
                
                for(int j=a;j<=b;j++)
                {
                    
                    if(j>=1000000 && j<=2000000)
                    {
                        
                        int k=j%10;
                        int l=j/10;
                        int m=l%10;
                        int no=l/10;
                        int ko=no%10;
                        int lo=no/10;
                        int ho=lo%10;
                        int go=lo/10;
                        int ao=go%10;
                        int bo=go/10;
                        int co=bo%10;
                        int ro=bo/10;
                                
                        int mo=k*1000000+l;
                        
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                        
                        mo=m*1000000+k*100000+no;
                        if(mo>j && mo<=b && mo>a)
                        {
                            
                            count++;
                        }
                        
                         mo=ko*1000000+m*100000+k*10000+lo;
                        if(mo>j && mo<=b && mo>a)
                        {
                            
                            count++;
                        }
                        
                        mo=ho*1000000+ko*100000+m*10000+k*1000+go;
                        if(mo>j && mo<=b && mo>a)
                        {
                            
                            count++;
                        }
                        mo=ao*1000000+ho*100000+ko*10000+m*1000+k*100+bo;
                        if(mo>j && mo<=b && mo>a)
                        {
                            
                            count++;
                        }
                        mo=co*1000000+ao*100000+ho*10000+ko*1000+m*100+k*10+ro;
                        if(mo>j && mo<=b && mo>a)
                        {
                            
                            count++;
                        }
                        
                    }
                    
                    if(j>=100000 && j<=1000000)
                    {
                        
                        int k=j%10;
                        int l=j/10;
                        int m=l%10;
                        int no=l/10;
                        int ko=no%10;
                        int lo=no/10;
                        int ho=lo%10;
                        int go=lo/10;
                        int ao=go%10;
                        int bo=go/10;
                                
                        int mo=k*100000+l;
                        
                        if(mo>j && mo<=b && mo>a)
                        {
                            
                            count++;
                        }
                        
                        mo=m*100000+k*10000+no;
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                        
                         mo=ko*100000+m*10000+k*1000+lo;
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                        
                        mo=ho*100000+ko*10000+m*1000+k*100+go;
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                        mo=ao*100000+ho*10000+ko*1000+m*100+k*10+bo;
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                       
                        
                    }
                    if(j>=10000 && j<=100000)
                    {
                        
                        int k=j%10;
                        int l=j/10;
                        int m=l%10;
                        int no=l/10;
                        int ko=no%10;
                        int lo=no/10;
                        int ho=lo%10;
                        int go=lo/10;
                                
                        int mo=k*10000+l;
                        
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                        
                        mo=m*10000+k*1000+no;
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                        
                         mo=ko*10000+m*1000+k*100+lo;
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                        
                        mo=ho*10000+ko*1000+m*100+k*10+go;
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                        
                       
                        
                    }
                    
                    if(j>1000 && j<=10000)
                    {
                        
                        int k=j%10;
                        int l=j/10;
                        int m=l%10;
                        int no=l/10;
                        int ko=no%10;
                        int lo=no/10;
                                
                                
                        int mo=k*1000+l;
                        
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                        
                        mo=m*1000+k*100+no;
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                        
                        mo=ko*1000+m*100+k*10+lo;
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                        
                       
                        
                    }
                    
                    if(j<=1000 && j>=100)
                    {
                        
                        int k=j%10;
                        int l=j/10;
                        int m=l%10;
                        int no=l/10;
                        
                        int mo=k*100+l;
                        
                        if(mo>j && mo<=b && mo>a)
                        {
                            
                            count++;
                        }
                        
                        mo=m*100+k*10+no;
                        if(mo>j && mo<=b && mo>a)
                        {
                            count++;
                        }
                    }
                    else if(j<=100 && j>=10 )
                    {
                        
                        int k=j%10;
                        int l=j/10;
                        int m=(k*10)+l;
                        
                        
                        if(m<=b && m>a && m>j)
                        {
                            
                            //System.out.println("j: "+j+"  mo: "+m);
                            count++;
                        }
                            
                    }
                }
                System.out.print("Case #"+i+": ");
                System.out.println(count);
            }
        }
    }
}
