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.*;
// read file name frome command line
public class ProblemC{
	public static void main(String args[]){
	
		
		try{
			// reading file initialization
			String 			filename = args[0];
			FileReader 		frStream = new FileReader(		filename);
			BufferedReader 	brStream = new BufferedReader(	frStream);
			// writing file initializtion
			FileWriter     fwStream = new FileWriter(		filename.substring(0, filename.length()-3)+"Output.in" );
			BufferedWriter bwStream = new BufferedWriter( 	fwStream  );
			PrintWriter    pwStream = new PrintWriter(    	bwStream  );
			
			String text = brStream.readLine();
			int numCase =  Integer.parseInt( text );


                        for( int i = 0 ; i < numCase ; i++){
                            text = brStream.readLine();
                            StringTokenizer currLine = new StringTokenizer( text );
                            int min = Integer.parseInt(currLine.nextToken());
                            int max = Integer.parseInt(currLine.nextToken());
                            int counter = 0;
                            for( int j = min ; j < max ; j++){
                                String number =""+j;
                                for( int k = 1 ;k < number.length(); k++){
                                    String pairnumber=number.substring(k)+number.substring(0,k);
                                    int pair=Integer.parseInt(pairnumber);
                                    if(pair > j  && pair <= max ){
                                        counter++;
                                        continue;
                                    }
                                }
                            }
                           pwStream.println ("Case #" + (i+1) + ": " +counter);
                    }
			// close all I/O files
			brStream.close();
			pwStream.close();
			
		}
		catch(IOException e){}
	}
}