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 );
    }
}

/*
ID: lovelacer
LANG: JAVA
PROG: candy
*/
import java.io.*;
import java.util.*;
public class recycle
{
    public static void main (String [] args) throws IOException
    {
        BufferedReader f = new BufferedReader(new FileReader("recycle.txt"));
        PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("recycle1.txt")));
        
        int T = Integer.parseInt(f.readLine());
        
        HashSet<String> checked;
        
        String[] nums;
        
        for(int k = 1; k <= T; k++)
        {
            nums = f.readLine().split(" ");
            int A = Integer.parseInt(nums[0]), B = Integer.parseInt(nums[1]), ans = 0;
            for(int n = A; n < B; n++)
            {
                checked = new HashSet<String>();
                String a = "" + n;
                String tmp = a.substring(1) + a.substring(0, 1);
                while(!tmp.equals(a))
                {
                    if(Integer.parseInt(tmp) <= B && Integer.parseInt(tmp) > n && !checked.contains(tmp))
                    {
                        ans++;
                        checked.add(tmp);
                    }
                    tmp = tmp.substring(1) + tmp.substring(0, 1);
                }
            }
            
            out.println("Case #" + k + ": " + ans);
        }
        
        out.close();
        System.exit(0);
    }
}