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

package recycled;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.TreeSet;

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

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
    try {
            FileInputStream fstream = new FileInputStream("C-small-attempt0.in");
            DataInputStream in = new DataInputStream(fstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            FileWriter outFile = new FileWriter("out.txt");
            PrintWriter out = new PrintWriter(outFile);
            String line;
            line = br.readLine();
            int cases = Integer.parseInt(line);
            for (int i=1; i<=cases;i++){
                line = br.readLine();
                String[] values = line.split(" ");
                int A = Integer.parseInt(values[0]);
                int B = Integer.parseInt(values[1]);
                int total=0;
                for (int n=A; n<=B;n++){
                    TreeSet<String> solutions = new TreeSet<String>();
                    for (int k=1;k<values[1].length();k++){
                        String m = circshift(n,k);
                        int mVal = Integer.parseInt(m);
                        if(mVal<=B && mVal!=n  && mVal> n && !m.startsWith("0") && m.length()==Integer.toString(n).length() )
                        {
                            solutions.add(m);
                        }                   
                    }
                    total+=solutions.size();
                }
                out.println("Case #"+i+": "+total);
            }
            in.close();
            out.close();
        } catch (Exception e) {//Catch exception if any
            System.err.println("Error: " + e.getMessage());
        }

}

    private static String circshift(int n, int k) {
        String nString=Integer.toString(n);
        int len=nString.length();
        String m =  nString.substring(len-k)+nString.subSequence(0, len-k);
        //System.out.println(n+" "+m);
        return m;
    }

}

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {

    static int length, a, b;
    static int count = 0;

    public static int len(int a) {
        int l = 0;
        while (a > 0) {
            a = a / 10;
            l++;
        }
        return l;
    }

    public static int calc(int m) {
        if (length == 1) {
            return 1;
        } else {
            for (int j = 0; j < length - 1; j++) {
                int x = 1, y = 1;
                for (int q = 1; q <= j + 1; q++) {
                    x *= 10;
                }
                for (int q = 1; q < length - j; q++) {
                    y *= 10;
                }
                int lastd = (m % x);
                int num = (m / x) +(lastd * y);
                if ((num >= a) && (num <= b) && (num != m)) {
                    count++;
                    
                }
            }
        }
        return 1;
    }

    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int n = Integer.parseInt(br.readLine());
            for (int i = 0; i < n; i++) {
                String str = br.readLine();
                StringTokenizer tok = new StringTokenizer(str, " ");
                a = Integer.parseInt(tok.nextToken());
                b = Integer.parseInt(tok.nextToken());
                System.out.print("Case #" + (i + 1) + ": ");
                count = 0;
                length = len(a);
                for (int k = a; k <= b; k++) {
                    calc(k);

                }
                System.out.print(count / 2);
                if (i != (n - 1)) {
                    System.out.print("\n");
                }
            }
        } catch (Exception e) {
            System.out.println(e.toString());
        }
    }
}