import java.io.*;
import java.util.*;

public class C {

    void solve() throws IOException {
        in("C-large.in"); out("C-large.out");

        long tm = System.currentTimeMillis();
        boolean[] mask = new boolean[2000000];
        int[] r = new int[10];
        int t = readInt();
        for (int cs = 1; cs <= t; ++cs) {
            int a = readInt();
            int b = readInt();
            int ans = 0;
            for (int m = a + 1; m <= b; ++m) {
                char[] d = String.valueOf(m).toCharArray();
                int c = 0;
                for (int i = 1; i < d.length; ++i) {
                    if (d[i] != '0' && d[i] <= d[0]) {
                        int n = 0;
                        for (int j = 0; j < d.length; ++j) {
                            int jj = i + j;
                            if (jj >= d.length) jj -= d.length;
                            n = n * 10 + (d[jj] - '0');
                        }
                        if (n >= a && n < m && !mask[n]) {
                            ++ans;
                            mask[n] = true;
                            r[c++] = n;
                        }
                    }
                }
                for (int i = 0; i < c; ++i) {
                    mask[r[i]] = false;
                }
            }
            println("Case #" + cs + ": " + ans);
            //System.out.println(cs);
        }
        System.out.println("time: " + (System.currentTimeMillis() - tm));
        exit();
    }

    void in(String name) throws IOException {
        if (name.equals("__std")) {
            in = new BufferedReader(new InputStreamReader(System.in));
        } else {
            in = new BufferedReader(new FileReader(name));
        }
    }

    void out(String name) throws IOException {
        if (name.equals("__std")) {
            out = new PrintWriter(System.out);
        } else {
            out = new PrintWriter(name);
        }
    }

    void exit() {
        out.close();
        System.exit(0);
    }

    int readInt() throws IOException {
        return Integer.parseInt(readToken());
    }

    long readLong() throws IOException {
        return Long.parseLong(readToken());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readToken());
    }

    String readLine() throws IOException {
        st = null;
        return in.readLine();
    }

    String readToken() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            st = new StringTokenizer(in.readLine());
        }
        return st.nextToken();
    }

    boolean eof() throws IOException {
        return !in.ready();
    }

    void print(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void println(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void print(Object value) {
        out.print(value);
    }

    void println(Object value) {
        out.println(value);
    }

    void println() {
        out.println();
    }

    StringTokenizer st;

    BufferedReader in;
    PrintWriter out;

    public static void main(String[] args) throws IOException {
        new C().solve();
    }
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;

public class CodeJam
{
    private static BufferedReader reader;
    private static BufferedWriter writer;
    
    public static void main(String args[]) throws Exception
    {
        prepareFiles("C-large");
        
        int T = Integer.parseInt(reader.readLine());
     
        for(int i = 0; i < T; i++)
        {
            String[] line = reader.readLine().split(" ");
            int A = Integer.parseInt(line[0]);
            int B = Integer.parseInt(line[1]);
            
            int l = String.valueOf(A).length();
            int recycled = 0;
            
            for(int n = A; n <= B; n++)
            {
                HashSet<Integer> checkedCycles = new HashSet<>();
                String recycledSequence = String.valueOf(n);
                
                for(int j = 1; j < l; j++)
                {
                    recycledSequence = recycle(recycledSequence);
                    
                    int recycledInt = Integer.valueOf(recycledSequence);
                    
                    if(checkedCycles.contains(recycledInt))
                    {
                        continue;
                    }
                    else
                    {
                        checkedCycles.add(recycledInt);
                    }
                        
                    if(n < recycledInt && recycledInt <= B)
                    {
                        recycled ++;
                    }
                }
            }
            
            print(getCase(i + 1));
            print(recycled);
            print("\n");
        }
        
        putAwayFiles();
    }
    
    private static String recycle(String sequence)
    {
        String newSequence = new String();
        
        newSequence += sequence.charAt(sequence.length() - 1);
        
        for(int i = 0; i < sequence.length() - 1; i++)
        {
            newSequence += sequence.charAt(i);
        }
        
        return newSequence;
    }
    
    private static void prepareFiles(String fileName) throws IOException
    {
        reader = new BufferedReader(new FileReader(new File(fileName + ".in")));
        writer = new BufferedWriter(new FileWriter(new File(fileName + ".out")));
    }
    
    private static void putAwayFiles() throws IOException
    {
        reader.close();
        writer.flush();
        writer.close();
    }
    
    private static String getCase(int i)
    {
        return "Case #" + i + ": ";
    }
    
    private static void print(Object object) throws IOException
    {
        System.out.print(object.toString());
        writer.write(object.toString());
    }
}


