/*
 * 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.*;
import java.util.HashSet;
import java.util.Set;

public class C {

    private static final String FILE = "C-small-attempt0";

    private static final boolean SAVE_OUT = true;

    public static void main(String[] args) throws IOException {
        BufferedReader in = createReader();
        FileWriter out;
        if (SAVE_OUT) {
            out = new FileWriter(FILE + ".out");
        }
        int t = Integer.parseInt(in.readLine());
        int c = 0;
        while (t-- > 0) {
            String row = in.readLine();
            String[] split = row.split(" ");
            int a = Integer.parseInt(split[0]);
            int b = Integer.parseInt(split[1]);
            int num = 0;
            for (int i = a; i <= b; ++i) {
                num += calc(i, a, b);
            }
            String res = String.format("Case #%d: %d", ++c, num / 2);
            System.out.println(res);
            if (SAVE_OUT) {
                out.append(res);
                out.append("\n");
            }
        }
        if (SAVE_OUT) {
            out.close();
        }
    }

    private static int calc(int c, int a, int b) {
        int num = 0;
        String s = Integer.toString(c);
        Set<Integer> seen = new HashSet<Integer>();
        for (int i = 1; i < s.length(); ++i) {
            int cc = flip(s, i);
            while (cc <= b) {
                if (seen.contains(cc)) {
                    break;
                }
                if (cc >= a && c != cc) {
                    ++num;
                    seen.add(cc);
                }
                cc *= 10;
            }
        }
        return num;
    }

    private static int flip(String s, int k) {
        String first = s.substring(0, k);
        StringBuilder sb = new StringBuilder();
        sb.append(s.substring(k));
        sb.append(first);
        while (sb.charAt(0) == '0') {
            sb.deleteCharAt(0);
        }
        return Integer.parseInt(sb.toString());
    }

    private static BufferedReader createReader() throws FileNotFoundException {
        return new BufferedReader(new FileReader(FILE + ".in"));
    }
}
