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);
		}

	}
}

import java.util.Scanner;
import java.io.*;
public class Tobi
{
    static String out="",output="";

    public static void main(String[] args)
    {
        try
        {
             Scanner in = new Scanner(new File("file.in"));
             int n = in.nextInt();
             int count = 1;
             String out = "";
             while(in.hasNext())
             {
               int a = in.nextInt();
               int b = in.nextInt();
               out += "Case #"+count+": "+ activity(a,b)+"\n";
               count++;
             try
             {
                 File file = new File("output.dat");
                 PrintWriter output = new PrintWriter(file);
                 output.write(out);
                 output.close();
                }
                catch(Exception exception)
                {
                 System.out.println("ERROR");
                }
             }
    }catch(Exception exception){
        System.out.println("ERROR");
    }
    System.out.println("DONE");
    }

    public static int activity(int A, int B)
    {
        int counter = 0;
        
        
        for(int i = A; i <= B; i++)
        {
            String all[] = myGenerator(Integer.toString(i));
            
            for(int j = 0; j < all.length; j++)
            {
              if((i < Integer.parseInt(all[j])) && (Integer.parseInt(all[j]) <= B))
              {
                counter++;
              }

            }
        }
        return counter;
    }

    public static String[] myGenerator(String word)
    {
        String[] all = new String[word.length()-1];//changed frm len - 1
        for(int i = 0; i < all.length; i++)
        {
            all[i] = generate(word);
            word = generate(word);
        }
        return all;
    }
    public static String generate(String w)
    {
        String ans = w.substring(w.length()-1);
        for(int i = 0; i < w.length()-1; i++)
        {
          ans += w.substring(i,i+1);
        }
        return ans;
    }
}
