import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;


public class ProblemC {



	
	
	// *************************************************************************************
	// *********************************** FRAMEWORK ***************************************
	// *************************************************************************************
	
	public static BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
	public static boolean isStandardInput = false;
	
	public static File input;
	public static FileReader inputreader;
	public static BufferedReader in;
	
	public static File output;
	public static FileWriter outputwriter;
	public static BufferedWriter out;
	
	public static StringTokenizer st;
	
	public static void main(String[] args) throws Exception {
		doSTDIN(true);
		setOutput("test.out");
		run();
		close();
	}
	
	public static void run() throws Exception {
		
		
		init("E:\\workspace\\2012\\src\\C-small");
		
		int cases = INT();
		
		for(int cc = 1;cc<=cases;cc++) {
			
			
			String a = TOKEN();
			String b = TOKEN();
			int count = 0;
			
			
			if (a.length() < 2){
				print("Case #"+cc+": ");
				println(0);
				continue;
			}
			
			
			int aa = Integer.parseInt(a);
			int bb = Integer.parseInt(b);
			
			for (int i = aa; i<=bb; i++){
				
				String s = ""+i;
				
				List<String> strings = new ArrayList<String>();
				strings.add(s);
				
				for (int j=0; j<s.length() - 1;j++){
					
					
					s = rotate(s);
					
					if (strings.contains(s)){
						continue;
					}else {
						strings.add(s);
					}
					
					
					int result = Integer.parseInt(s);
					
					if (aa <=result && result <= bb){
						count++;
					}
				}
			}
			
			print("Case #"+cc+": ");
			println(count/2);
		}
		
	}
	


	private static String rotate(String s) {
		
	    s = s.substring(1) + s.charAt(0);
		
		return s;
	}

	public static void init(String problemName) throws Exception {
		doSTDIN(false);
		setInput(problemName+".in");
		setOutput(problemName+".out");
	}
	
	// **************** PRINT METHODS **********************
	
	public static void println() throws IOException {
		out.write("\n");
		System.out.println();
	}
	
	public static void println(Object obj) throws IOException {
		out.write(obj.toString());
		out.write("\n");
		System.out.println(obj.toString());
	}
	
	public static void print(Object obj) throws IOException {
		out.write(obj.toString());
		System.out.print(obj.toString());
	}
	
	public static void println(long number) throws IOException {
		out.write(Long.toString(number));
		out.write("\n");
		System.out.println(number);
	}
	
	public static void print(long number) throws IOException {
		out.write(Long.toString(number));
		System.out.print(number);
	}
	
	public static void println(char c) throws IOException {
		out.write(Character.toString(c));
		out.write("\n");
		System.out.println(c);
	}
	
	public static void print(char c) throws IOException {
		out.write(Character.toString(c));
		System.out.print(c);
	}
	
	public static void println(String line) throws IOException {
		out.write(line);
		out.write("\n");
		System.out.println(line);
	}
	
	public static void print(String line) throws IOException {
		out.write(line);
		System.out.print(line);
	}
	
	// ******************** INPUT DECLARATION ******************
	
	public static void doSTDIN(boolean standard) {
		isStandardInput = standard;
	}
	
	public static void setInput(String filename) throws IOException {
		input = new File(filename);
		inputreader = new FileReader(input);
		in = new BufferedReader(inputreader);
	}
	
	public static void setOutput(String filename) throws IOException {
		output = new File(filename);
		outputwriter = new FileWriter(output);
		out = new BufferedWriter(outputwriter);
	}
	
	public static void close() throws IOException {
		if(in!=null)in.close();
		if(inputreader!=null)inputreader.close();
		
		if(out!=null)out.flush();
		if(out!=null)out.close();
		if(outputwriter!=null)outputwriter.close();
	}
	
	// ************************** INPUT READING *****************
	
	static String LINE() throws IOException { return isStandardInput?stdin.readLine():in.readLine(); }
	static String TOKEN() throws IOException {
		while (st == null || !st.hasMoreTokens())st = new StringTokenizer(LINE());
		return st.nextToken();
	}
	static int INT() throws IOException {return Integer.parseInt(TOKEN());}
	static long LONG() throws IOException {return Long.parseLong(TOKEN());}
	static double DOUBLE() throws IOException {return Double.parseDouble(TOKEN());}
	static BigInteger BIGINT() throws IOException {return new BigInteger(TOKEN());}

	
}
