import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;


public class Main {

//	static int MAX = 10000;
	static int MAX = 2000000;
	static Object[] All = new Object[MAX+1];
	
	static int size( int x ) {
		if(x>999999) return 7;
		if(x>99999)  return 6;
		if(x>9999)   return 5;
		if(x>999)    return 4;
		if(x>99)     return 3;
		if(x>9)      return 2;
		return 1;
	}
	static int[] rotate( int value ) {
		List<Integer> result = new ArrayList<Integer>();
		int[] V = new int[8];
		int s = size(value);
		int x = value;
		
		for(int i=s-1;i>=0;i--) {
			V[i] = x%10;
			x /=10;
		}
		int rot;
		for(int i=1; i<s; i++) {
			if(V[i]!=0){
				rot=0;
				for(int j=0,ii=i;j<s; j++,ii=(ii+1)%s){
					rot=rot*10+V[ii];
				}
				if(rot>value && !result.contains(rot))
					result.add(rot);
			}
		}
		if( result.isEmpty() )
			return null;
		int[] r = new int[result.size()];
		for(int i=0; i<r.length; i++)
			r[i]=result.get(i);
		return r;
	}
	
	static void precalculate() {
		for(int i=1; i<=MAX; i++){
			All[i] = rotate(i);
		}
	}
	static int solve( Scanner in ) {
		int A, B, sol=0;
		
		A = in.nextInt();
		B = in.nextInt();

		for( int i=A; i<=B; i++) {
//			List<Integer> result = rotate(i);
			if( All[i]!=null ) {
				for(int value: (int[])All[i] ) {
					if( value <= B )
						sol++;
				}
			}
		}

		return sol;
	}
	
	public static void main ( String args[] ) {
		int T; 
		Scanner in = new Scanner(System.in);
		T = in.nextInt();
		int cnt=0;
		int sol;
		precalculate();
		for( cnt=1; cnt<=T; cnt++ ) {
			sol = solve( in );
			System.out.printf("Case #%d: %d\n", cnt, sol);
		}

	}
}

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

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

public class Recycle {

    public static int recyclepos(String a, String b)
    {
        int iter = 0;
        int c = Integer.parseInt(a);
//        System.out.println(c);
        int d = Integer.parseInt(b);
//        System.out.println(d);
        int e = a.length();
//        System.out.println(e);
        int x = c;
        int[] s = new int[d-c];
        int[] s1 = new int[a.length()];
        for(int i = 0; i < d-c; i++)
        {
            s[i]  = x;
            x++;
        }
        for(int i = 0; i < d - c + 1; i++)
        {
            int h = Integer.parseInt(a);
            if (i != 0 && s[i-1] != 0)
            {
            for(int j = e - 1; j > 0; j--)
            {
                String f = a.substring(e-j) + a.substring(0, e-j);
                //System.out.println(f);
                int g = Integer.parseInt(f);
                //System.out.println(g);
                s1[j] = g;
                for(int y = 0; y < s1.length; y++)
                {
                    if(y == j);
                    else if(s1[y] == g)
                    {
                        g = 0;
                        break;
                    }
                }
                if(g > c && g > h && g <= d)
                    iter = iter + 1;
                //System.out.println("interations: "+ iter);
                }
            }
            if(i < d-c){
            a = String.valueOf(s[i]);
            }
        }
            
            
        return iter;
           
    }
    
    
    public static void main(String[] args) throws FileNotFoundException, IOException {
        
     FileReader theFileID = new FileReader("C-large.in");
     BufferedReader inFile = new BufferedReader(theFileID);
     FileWriter fw = new FileWriter("output.txt");
     PrintWriter output = new PrintWriter(fw);
     String line;

     int numCases = 0;
     if((line = inFile.readLine()) != null)
         numCases = Integer.parseInt(line);

     String[] x = null;
     
  
     for(int i = 0; (line = inFile.readLine()) != null && i < numCases; i++) {
         
         x = line.split(" ");
         String a = x[0];
         String b = x[1];
         int y = recyclepos(a, b);
         
         
         output.write("Case #"+ (i + 1) + ": " + y);
            output.println();
         
            }

            
            
     
     inFile.close();
     output.close();
     fw.close();
        
        System.out.println(recyclepos("1", "9"));
        System.out.println(recyclepos("10", "40"));
        System.out.println(recyclepos("100", "500"));
        System.out.println(recyclepos("1111", "2222"));
        
        
    }
}
