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 );
    }
}

import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
import java.util.HashSet;
import java.util.Set;


public class Recycled {

	public static void main(String [] args) throws NumberFormatException, IOException
	{
		BufferedReader in = new BufferedReader(new StringReader(args[0]));
		int rows = Integer.parseInt(in.readLine());
		for ( int i = 1; i <= rows; i++)
		{			
			String line = in.readLine();
			String [] tokens = line.split(" ");
			int low = Integer.parseInt(tokens[0]);
			int high = Integer.parseInt(tokens[1]);
			
			int count = 0;
			Set<String> used = new HashSet<String>();
			for ( int j = low; j <= high; j++ )
			{
				String str = Integer.toString(j);
				//System.out.println("Original: " + str);
				for ( int k = 0; k < str.length()-1; k++ )
				{
					String newStr = str.substring(k+1) + str.substring(0,k+1);
					int newInt = Integer.parseInt(newStr); 
					if ( Integer.toString(j).length() == Integer.toString(newInt).length() &&
							
							newInt<=high && 
							!used.contains(j+","+newInt)
							&& !used.contains(newInt+","+j) 
							&& j < newInt )
					{
						count++;
						used.add(j+","+newInt);
					}
				}
			}
			System.out.println("Case #"+i+": " + count);
			//System.out.println(used);
			
			
		}
	}
	
}
