package codejam;

import java.util.*;
import java.io.*;

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

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

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;

/**
 *
 * @author ALEX
 */
public class Recycle {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        try {
             FileReader fin=new FileReader("C-small-attempt0.in");
             BufferedReader in = new BufferedReader(fin);
             FileWriter fout=new FileWriter("result.txt");
             BufferedWriter out=new BufferedWriter(fout);
             int nrt;
             nrt=Integer.valueOf(in.readLine());
             String [] med;
             String str;
             for(int i=1;i<=nrt;i++)
             {  
                 str=in.readLine();
                 med=str.split(" ");
                 int A=Integer.valueOf(med[0]);
                int B=Integer.valueOf(med[1]);
                int nr=0;
                String s;
                for (int a=A;a<=B;a++){
                    int x;
                    int mo=1;
                    while((a/mo)%10==0){
                mo=mo*10;
                    } 
                    if(a/mo>9){
                        mo=mo*10;
                        s=(a%mo+""+a/mo);
                        x=Integer.valueOf(s);
                    }
                    else continue;                    
                    while(a!=x){
                        if(x>=A&&x<=B){
                            nr++;
                        }
                        mo=1;
                    while((x/mo)%10==0){
                        mo=mo*10;
                    } 
                    if(x/mo>9){
                        mo=mo*10;
                        s=(x%mo+""+x/mo);
                        x=Integer.valueOf(s);
                    }
                    else break; 
                    }      
                }
                System.out.println(nr/2);
                out.write("Case #"+i+": "+nr/2);
                out.newLine();
                }
             in.close();
             fin.close();
             out.close();
             fout.close();
             }
        catch(Exception e){} 
    }       
             
}
