package Main;

import com.sun.deploy.util.ArrayUtil;
import org.apache.commons.lang3.ArrayUtils;

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;

/**
 * Created with IntelliJ IDEA.
 * User: arran
 * Date: 14/04/12
 * Time: 3:12 PM
 * To change this template use File | Settings | File Templates.
 */
public class Round {
    public StringBuilder parse(BufferedReader in) throws IOException {
        StringBuilder out = new StringBuilder();
        String lineCount = in.readLine();

        for (int i = 1; i <= Integer.parseInt(lineCount); i++)
        {
            out.append("Case #"+i+": ");
            System.err.println("Case #"+i+": ");
            String line = in.readLine();
            String[] splits = line.split(" ");
            int p1 = Integer.valueOf(splits[0]);
            int p2 = Integer.valueOf(splits[1]);
            int r = pairRecyclable(p1, p2);
            out.append(r);

//            if (i < Integer.parseInt(lineCount))
                out.append("\n");
        }
        return out;
    }

    public static int pairRecyclable(int i1, int i2) {
        HashSet<String> hash = new HashSet<String>();
        for (int i = i1; i < i2; i++)
        {
            String istr = String.valueOf(i);
            if (istr.length() < 2) continue;
            for (int p = 0; p < istr.length() ; p++)
            {
                String nistr = istr.substring(p,istr.length()).concat(istr.substring(0,p));
                if (Integer.valueOf(nistr) < i1) continue;
                if (Integer.valueOf(nistr) > i2) continue;
                if (nistr.equals(istr)) continue;
                String cnistr = (Integer.valueOf(nistr) > Integer.valueOf(istr)) ?  istr + "," + nistr : nistr + "," + istr;
                hash.add(cnistr);
            }
        }
        return hash.size();
    }

    public static void main(String[] args) {
        InputStreamReader converter = null;
        try {
            int attempt = 0;
            String quest = "C";
//            String size = "small-attempt";
            String size = "large";
            converter = new InputStreamReader(new FileInputStream("src/resource/"+quest+"-"+size+".in"));
            BufferedReader in = new BufferedReader(converter);
            Round r = new Round();
            String str = r.parse(in).toString();
            System.out.print(str);
            FileOutputStream fos = new FileOutputStream(quest+"-"+size+".out");
            OutputStreamWriter osw = new OutputStreamWriter(fos);
            BufferedWriter bw = new BufferedWriter(osw);
            bw.write(str);
            bw.flush();
            bw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

import java.util.Scanner;
import java.io.IOException;
import java.util.Arrays;
import java.util.ArrayList;
import java.io.PrintStream;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.FileInputStream;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
	public static void main(String[] args) {
		InputStream inputStream;
		try {
			inputStream = new FileInputStream("C-large.in");
		} catch (IOException e) {
			throw new RuntimeException(e);
		}
		OutputStream outputStream;
		try {
			outputStream = new FileOutputStream("gcj3.out");
		} catch (IOException e) {
			throw new RuntimeException(e);
		}
		Scanner in = new Scanner(inputStream);
		PrintWriter out = new PrintWriter(outputStream);
		GCJ3 solver = new GCJ3();
		solver.solve(1, in, out);
		out.close();
	}
}

class GCJ3 {
	public void solve(int testNumber, Scanner in, PrintWriter out) {
        int cases = in.nextInt();
        for(int caseNum =0;caseNum<cases;caseNum++) {
            int res = 0;
            long A = in.nextInt();
            long B = in.nextInt();
            int N = IntLib.numDigits(A,10);
            long[] pow = new long[N+1];
            pow[0]=1;
            for(int i=1;i<=N;i++)pow[i]=10*pow[i-1];
            long[] done = new long[N];
            for(long i=A;i<=B;i++) {
                inner: for(int j=1;j<=N-1;j++) {
                    long left = i;
                    long right = i;
                    left/=pow[N-j];
                    right%=pow[N-j];
                    right*=pow[j];
                    long nw = left+right;
                    done[j-1]=nw;
                    if(nw>i && nw>=A && nw<=B) {
                        for(int k=0;k<j-1;k++) {
                            if(done[k]==nw)continue inner;
                        }
                        res++;
                    }
                }
            }
            out.println("Case #"+(caseNum+1)+": "+res);
        }
	}
    }

class IntLib {
    public static int numDigits(long a, long base) {
        int res = 0;
        while(a>0) {
            a/=base;
            res++;
        }
        return res;
    }
}

