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.io.*;
import java.util.ArrayList;
import java.util.List;

public class Problem_C {
    public static void main(String[] args) throws IOException
            {

                String fileName = "C-large.in";
                FileReader reader = new FileReader(fileName);
                LineNumberReader lnreader = new LineNumberReader(reader);
                FileWriter writer = new FileWriter("output-C-large.txt");
                PrintWriter out = new PrintWriter(writer);
                
                String line = ""; 
                line = lnreader.readLine();
                String line_array[];
                int A;
                int B;
                int length;
                int recycled;
                int count = 0;
				List<Integer> rec_list = new ArrayList<Integer>();
                int index = 0;

                while ((line = lnreader.readLine()) != null){
                    count = 0;
                    line_array = line.split(" ");
                    length = line_array[0].length();
					rec_list.clear();
                    A = Integer.parseInt(line_array[0]);
                    B = Integer.parseInt(line_array[1]);
                    for (int k=A;k<B;k++){
                        recycled = k;
						rec_list.clear();
                        for (int j=1;j<length;j++){
                            recycled = recycle(recycled,length);
                            if ((recycled > k) && (recycled <= B)){
                                if (!rec_list.contains(recycled)){
                                    count++;
                                    rec_list.add(recycled);
                                }
                            }
                        }
                    }

                    out.println("Case #" + (lnreader.
                    getLineNumber()-1) + ": " + count);
                }
                out.close();

            }

            private static  int recycle(int a,int length){
                int r = a%10;
                int q = a/10;
                r = r * (int)java.lang.Math.pow(10,length-1);
                return (r+q);
            }
}

