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

public class recycled
{
	public static void main(String[] args) throws IOException
	{
		BufferedReader baca= new BufferedReader(new InputStreamReader(System.in));
		int T= Integer.parseInt(baca.readLine());
		for(int i=1; i<=T; i++)
		{
			StringTokenizer token= new StringTokenizer(baca.readLine());
			int A= Integer.parseInt(token.nextToken());
			int B= Integer.parseInt(token.nextToken());
			int count=0;
			
			for(int n=A; n<B; n++)
			{
				for(int m=n+1; m<=B; m++)
				{
					count=count+hitung(n,m);
				}
			}
			System.out.println("Case #"+i+": "+count);
		}
	}
	
	public static int hitung(int n, int m)
	{
		String angka= Integer.toString(n);
		String tanda= Integer.toString(m);
		char[] sesuatu=angka.toCharArray();
		char[] acuan=tanda.toCharArray();
		for(int i=0; i<angka.length(); i++)
		{
			char temp=sesuatu[0];
			for(int j=0; j< angka.length()-1; j++)
			{
				sesuatu[j]=sesuatu[j+1];
			}
			sesuatu[angka.length()-1]=temp;
			boolean b=true;
			
			for(int z=0; z<angka.length();z++)
			{
				if(sesuatu[z]!=acuan[z])
				{
					b=false;
					break;
				}
			}
			if(b==true)
			{
				return 1;
			}
		}
		return 0;
	}	
}