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 googlecodejam;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.StringTokenizer;

/**
 *
 * @author massimo
 */
public class ProblemC {

    public static void main(String[] args) throws FileNotFoundException, IOException {
        BufferedReader in = new BufferedReader(new FileReader("in.in"));
        PrintWriter out = new PrintWriter("out.out");
        int t = Integer.parseInt(in.readLine());
        for (int i = 1; i <= t; i++) {
            StringTokenizer st = new StringTokenizer(in.readLine(), " ");
            int a = Integer.parseInt(st.nextToken());
            int b = Integer.parseInt(st.nextToken());            
            HashSet<String> res=new HashSet<String>();
            for (int j=a; j<=b; j++) {                
                String s=Integer.toString(j);
                for (int k=0; k<s.length()-1; k++) {
                    s=s.charAt(s.length()-1)+s.substring(0, s.length()-1);
                    if (s.charAt(0)!='0') {
                        int j2=Integer.parseInt(s);
                        if (j2<=b && j2>=a && j!=j2) {
                            if (j<j2) {
                                if (res.add(j+","+j2)) {
                                }
                            } else {
                                res.add(j2+","+j);
                            }
                        }
                    }
                }                
            }
            out.println("Case #"+i+": "+res.size());
        }
        out.close();
    }
}
