package jp.funnything.competition.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;

import org.apache.commons.io.IOUtils;

public class QuestionReader {
    private final BufferedReader _reader;

    public QuestionReader( final File input ) {
        try {
            _reader = new BufferedReader( new FileReader( input ) );
        } catch ( final FileNotFoundException e ) {
            throw new RuntimeException( e );
        }
    }

    public void close() {
        IOUtils.closeQuietly( _reader );
    }

    public String read() {
        try {
            return _reader.readLine();
        } catch ( final IOException e ) {
            throw new RuntimeException( e );
        }
    }

    public BigDecimal[] readBigDecimals() {
        return readBigDecimals( " " );
    }

    public BigDecimal[] readBigDecimals( final String separator ) {
        final String[] tokens = readTokens( separator );

        final BigDecimal[] values = new BigDecimal[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = new BigDecimal( tokens[ index ] );
        }

        return values;
    }

    public BigInteger[] readBigInts() {
        return readBigInts( " " );
    }

    public BigInteger[] readBigInts( final String separator ) {
        final String[] tokens = readTokens( separator );

        final BigInteger[] values = new BigInteger[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = new BigInteger( tokens[ index ] );
        }

        return values;
    }

    public int readInt() {
        final int[] values = readInts();

        if ( values.length != 1 ) {
            throw new IllegalStateException( "Try to read single interger, but the line contains zero or multiple values" );
        }

        return values[ 0 ];
    }

    public int[] readInts() {
        return readInts( " " );
    }

    public int[] readInts( final String separator ) {
        final String[] tokens = readTokens( separator );

        final int[] values = new int[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = Integer.parseInt( tokens[ index ] );
        }

        return values;
    }

    public long readLong() {
        final long[] values = readLongs();

        if ( values.length != 1 ) {
            throw new IllegalStateException( "Try to read single interger, but the line contains zero or multiple values" );
        }

        return values[ 0 ];
    }

    public long[] readLongs() {
        return readLongs( " " );
    }

    public long[] readLongs( final String separator ) {
        final String[] tokens = readTokens( separator );

        final long[] values = new long[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = Long.parseLong( tokens[ index ] );
        }

        return values;
    }

    public String[] readTokens() {
        return readTokens( " " );
    }

    public String[] readTokens( final String separator ) {
        return read().split( separator );
    }
}


/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.Scanner;
import java.util.TreeSet;

/**
 *
 * @author violetlily
 */
public class Jam2012Q_C_S {

    private final String ipath = "C-small-attempt0.in";
    private final String opath = "C-small-attempt0.ou";
//    private final String ipath = "C-large.in";
//    private final String opath = "C-large.ou";

    public void Handle() throws FileNotFoundException {

        PrintStream out = new PrintStream(   
                new BufferedOutputStream(   
                        new FileOutputStream(opath)));   
        System.setOut(out);

        Scanner sc = new Scanner(new FileInputStream(new File(ipath)));
        int t = sc.nextInt();
        int ii = 1;
        while (t > 0) {

            int a = sc.nextInt();
            int b = sc.nextInt();
            int c = 0;
    
            for (int i = a; i <= b; i++) {
                TreeSet ts = new TreeSet();
                String ta = Integer.toString(i);
                String tb = ta + ta;
                for (int j = 0; j < ta.length(); j++) {
                    int tc = Integer.valueOf(tb.substring(j, j + ta.length()));
                    if (tc > i && tc <= b) {
                        ts.add(tc);
                    }
                }
                c += ts.size();
            }

            System.out.println("Case #" + ii + ": " + c);
            
            ii++;
            t--;
        }
        out.close();
    }

    public static void main(String args[]) throws Exception {
        Jam2012Q_C_S t = new Jam2012Q_C_S();
        t.Handle();
    }
}
