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 recyclednumbers;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.Vector;

/**
 *
 * @author Kholoud
 */
public class RecycledNumbers {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        try {
            FileInputStream ifstream = new FileInputStream("C:\\Users\\Kholoud\\Downloads\\C-large.in");
            DataInputStream in = new DataInputStream(ifstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            int n = Integer.parseInt( br.readLine());
            String line;
            for(int i = 0;i<n;i++)
            {
                int count = 0;
                line = br.readLine();
                int A = Integer.parseInt(line.split(" ")[0]);
                int B = Integer.parseInt(line.split(" ")[1]);
                Vector<String> rotatedNumbers;
                for(int num = A;num<=B;num++)
                {
                    rotatedNumbers = new Vector<String>();
                    String rotatedNum = String.valueOf(num);
                    for(int j = 0;j<String.valueOf(num).length()-1;j++)
                    {
                        rotatedNum = rotate(rotatedNum);
                        if(num < Integer.parseInt(rotatedNum) &&Integer.parseInt(rotatedNum) <= B && !rotatedNumbers.contains(rotatedNum))
                        {
                            rotatedNumbers.add(rotatedNum);
                            count++;
                        }
                    }
                }
                System.out.println("Case #" + (i + 1) + ": " + count);
            }
            
        } catch (Exception e) {
            System.out.print(e.toString());
        }
    }
    public static String rotate(String num)
    {     
        String rotated = num.charAt(num.length()-1) + num.substring(0, num.length()-1);       
        return rotated;
    }
}
