import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class CopyOfCopyOfMain {

	static int ndigits(int n) {
		return (int) (Math.log10(n) + 1);
	}

	static int rot(int n, int dig) {
		return (int) ((n % 10) * Math.pow(10, dig - 1)) + (int) (n / 10);
	}

	public static void main(String[] args) throws FileNotFoundException {
		String file = "C-large";
		Scanner in = new Scanner(new File(file + ".in"));
		PrintWriter out = new PrintWriter(new File(file + ".out"));

		int T = in.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			int c = 0;
			int[] list = new int[ndigits(B)];
			numbers: for (int i = A; i <= B; i++) {
				int digs = ndigits(i);
				int rot = i;
				int pairs = 0;

				Arrays.fill(list, -1);
				list[0] = i;

				digits: for (int j = 1; j <= digs + 1; j++) {

					rot = rot(rot, digs);
					if(rot < i)
						continue;

					if (A <= rot && rot <= B) {
						for (int k = 0; k < j; k++) {
							if (list[k] == rot) {
								continue digits;
							}
						}
						pairs++;
						list[j] = rot;
					}
				}

				//c += pairs * (pairs + 1) / 2;
				c += pairs ;
				// c+=digs;
			}
			out.println("Case #" + t + ": " + c);
		}

		in.close();
		out.close();
	}
}

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

package recycle;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;

/**
 *
 * @author admin
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws FileNotFoundException, IOException {
        // TODO code application logic here
         FileReader fr=new FileReader("C-large.in");
        BufferedReader br=new BufferedReader(fr);
        FileWriter fw=new FileWriter("result.txt");
        PrintWriter pw=new PrintWriter(fw);
getOutPut(br,pw);
pw.close();
    }
    public  static void getOutPut(BufferedReader br,PrintWriter pw) throws IOException {
        int t=Integer.parseInt(br.readLine());
       int A,B;
        for(int i=0;i<t;i++){
        String[] s=br.readLine().split(" ");
         A=Integer.parseInt(s[0]);
         B=Integer.parseInt(s[1]);
           
        pw.print("Case #"+(i+1)+": "+recyles(A,B));
         
        pw.println();
        }
    }

    public  static int recyles(int A,int B) {
        ArrayList<Integer> num;
        String Sa,Sb;
        int count=0;
        Sa=Integer.toString(A);
        Sb=Integer.toString(B);
        for(int i=A;i<=B;i++){
            num=new ArrayList<Integer>();
          for(int j=Sa.length()-1;j>0;j--){
            Sa=Integer.toString(i).substring(j)+Integer.toString(i).substring(0,j);
            if(Integer.parseInt(Sa)<=B&&Sa.charAt(0)!='0'&&i<Integer.parseInt(Sa)){
                if(!num.contains(Integer.parseInt(Sa))){
                num.add(Integer.parseInt(Sa));
                count++;
                }

              }
          }
        }
        
        return count;
    }

}
