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 Palabras{

		static int T;
		static int matrix[][];
		static int valores[];
	    static BufferedReader input;
   
		static StringTokenizer token;
		static String leerLinea() throws IOException 
		{
		        String linea = input.readLine();
				if(linea!=null)
				{
					token = new StringTokenizer(linea," ");
				}
				return linea;
		}
		
    static String siguiente() 
    {
		return token.nextToken(); 
	}
	
	static void escribirArchivo(String data) throws IOException
	{
		PrintWriter output = new PrintWriter(new BufferedWriter(new FileWriter(data)));

		for(int i=0; i<T; i++)
		{
			output.println("Case #"+(i+1)+": "+valores[i]);
		}
		
		output.close();
	}
	
    static int siguienteInt() 
    { 
		return Integer.parseInt(siguiente()); 
	}
	
	
	static void procesarDatos()
	{
		for(int i=0; i<T; i++)
		{
				for(int k=matrix[i][0]; k<=matrix[i][1]; k++)
				{
					String num=k+"";
					String alt="";
					int tam=num.length();
					int numero=0;
					boolean repetido=true;
					
					
					for(int l=0;l<tam-1 && tam>1; l++)
					{
						alt=num.substring(l+1, tam)+num.substring(0,l+1);
						numero = Integer.parseInt(alt);
						//System.out.println("alt "+numero);
						if(numero >= matrix[i][0] && numero <= matrix[i][1] && !num.equals(alt)){valores[i]++;}
					}
			/*		for(int l=0;l<tam-1 && tam>1; l++)
					{
						if(!num.substring(l+1, l+2).equals(num.substring(l,l+1)))
						{
							repetido = false;
						}
					}
					if(repetido && tam>1){valores[i]--;}
			*/	}
			valores[i] = valores[i]/2;
		}
	}
    
    
    public static void main(String[] args) throws IOException {

		input = new BufferedReader(new FileReader(new File("prueba.in")));
		//System.out.println("jd");
        T = Integer.parseInt(leerLinea());
        
        

        if(T<1 || T>1000)
        {
			System.out.println("ERROR T");
			}
		matrix = new int[T][2];
		valores = new int[T];
		for(int i=0; i<T; i++)
		{
			leerLinea();
			matrix[i][0] = siguienteInt();
			matrix[i][1] = siguienteInt();
		}
		procesarDatos();
		
        escribirArchivo("prueba.out");
        
		
    }

}


